diff --git a/docs/contribution/HELPER_FUNCTIONS.md b/docs/contribution/HELPER_FUNCTIONS.md
new file mode 100644
index 000000000..d9e355dd2
--- /dev/null
+++ b/docs/contribution/HELPER_FUNCTIONS.md
@@ -0,0 +1,690 @@
+# 🛠️ Helper Functions Reference
+
+**Quick reference for all helper functions available in `tools.func`**
+
+> These functions are automatically available in install scripts via `$FUNCTIONS_FILE_PATH`
+
+---
+
+## 📋 Table of Contents
+
+- [Scripts to Watch](#scripts-to-watch)
+- [Runtime & Language Setup](#runtime--language-setup)
+- [Database Setup](#database-setup)
+- [GitHub Release Helpers](#github-release-helpers)
+- [Tools & Utilities](#tools--utilities)
+- [SSL/TLS](#ssltls)
+- [Utility Functions](#utility-functions)
+- [Package Management](#package-management)
+
+---
+
+## 📚 Scripts to Watch
+
+**Learn from real, well-implemented scripts. Each app requires TWO files that work together:**
+
+| File               | Location                     | Purpose                                                                  |
+| ------------------ | ---------------------------- | ------------------------------------------------------------------------ |
+| **CT Script**      | `ct/appname.sh`              | Runs on **Proxmox host** - creates container, contains `update_script()` |
+| **Install Script** | `install/appname-install.sh` | Runs **inside container** - installs and configures the app              |
+
+> ⚠️ **Both files are ALWAYS required!** The CT script calls the install script automatically during container creation.
+
+### Node.js + PostgreSQL
+
+**Koel** - Music streaming with PHP + Node.js + PostgreSQL
+| File | Link |
+|------|------|
+| CT (update logic) | [ct/koel.sh](../../ct/koel.sh) |
+| Install | [install/koel-install.sh](../../install/koel-install.sh) |
+
+**Actual Budget** - Finance app with npm global install
+| File | Link |
+|------|------|
+| CT (update logic) | [ct/actualbudget.sh](../../ct/actualbudget.sh) |
+| Install | [install/actualbudget-install.sh](../../install/actualbudget-install.sh) |
+
+### Python + uv
+
+**MeTube** - YouTube downloader with Python uv + Node.js + Deno
+| File | Link |
+|------|------|
+| CT (update logic) | [ct/metube.sh](../../ct/metube.sh) |
+| Install | [install/metube-install.sh](../../install/metube-install.sh) |
+
+**Endurain** - Fitness tracker with Python uv + PostgreSQL/PostGIS
+| File | Link |
+|------|------|
+| CT (update logic) | [ct/endurain.sh](../../ct/endurain.sh) |
+| Install | [install/endurain-install.sh](../../install/endurain-install.sh) |
+
+### PHP + MariaDB/MySQL
+
+**Wallabag** - Read-it-later with PHP + MariaDB + Redis + Nginx
+| File | Link |
+|------|------|
+| CT (update logic) | [ct/wallabag.sh](../../ct/wallabag.sh) |
+| Install | [install/wallabag-install.sh](../../install/wallabag-install.sh) |
+
+**InvoiceNinja** - Invoicing with PHP + MariaDB + Supervisor
+| File | Link |
+|------|------|
+| CT (update logic) | [ct/invoiceninja.sh](../../ct/invoiceninja.sh) |
+| Install | [install/invoiceninja-install.sh](../../install/invoiceninja-install.sh) |
+
+**BookStack** - Wiki/Docs with PHP + MariaDB + Apache
+| File | Link |
+|------|------|
+| CT (update logic) | [ct/bookstack.sh](../../ct/bookstack.sh) |
+| Install | [install/bookstack-install.sh](../../install/bookstack-install.sh) |
+
+### PHP + SQLite (Simple)
+
+**Speedtest Tracker** - Speedtest with PHP + SQLite + Nginx
+| File | Link |
+|------|------|
+| CT (update logic) | [ct/speedtest-tracker.sh](../../ct/speedtest-tracker.sh) |
+| Install | [install/speedtest-tracker-install.sh](../../install/speedtest-tracker-install.sh) |
+
+---
+
+## Runtime & Language Setup
+
+### `setup_nodejs`
+
+Install Node.js from NodeSource repository.
+
+```bash
+# Default (Node.js 22)
+setup_nodejs
+
+# Specific version
+NODE_VERSION="20" setup_nodejs
+NODE_VERSION="22" setup_nodejs
+NODE_VERSION="24" setup_nodejs
+```
+
+### `setup_go`
+
+Install Go programming language (latest stable).
+
+```bash
+setup_go
+
+# Use in script
+setup_go
+cd /opt/myapp
+$STD go build -o myapp .
+```
+
+### `setup_rust`
+
+Install Rust via rustup.
+
+```bash
+setup_rust
+
+# Use in script
+setup_rust
+source "$HOME/.cargo/env"
+$STD cargo build --release
+```
+
+### `setup_uv`
+
+Install Python uv package manager (fast pip/venv replacement).
+
+```bash
+setup_uv
+
+# Use in script
+setup_uv
+cd /opt/myapp
+$STD uv sync --locked
+```
+
+### `setup_ruby`
+
+Install Ruby from official repositories.
+
+```bash
+setup_ruby
+```
+
+### `setup_php`
+
+Install PHP with configurable modules and FPM/Apache support.
+
+```bash
+# Basic PHP
+setup_php
+
+# Full configuration
+PHP_VERSION="8.3" \
+PHP_MODULE="mysqli,gd,curl,mbstring,xml,zip,ldap" \
+PHP_FPM="YES" \
+PHP_APACHE="YES" \
+setup_php
+```
+
+**Environment Variables:**
+| Variable | Default | Description |
+|----------|---------|-------------|
+| `PHP_VERSION` | `8.3` | PHP version to install |
+| `PHP_MODULE` | `""` | Comma-separated list of modules |
+| `PHP_FPM` | `NO` | Install PHP-FPM |
+| `PHP_APACHE` | `NO` | Install Apache module |
+
+### `setup_composer`
+
+Install PHP Composer package manager.
+
+```bash
+setup_php
+setup_composer
+
+# Use in script
+$STD composer install --no-dev
+```
+
+### `setup_java`
+
+Install Java (OpenJDK).
+
+```bash
+# Default (Java 21)
+setup_java
+
+# Specific version
+JAVA_VERSION="17" setup_java
+JAVA_VERSION="21" setup_java
+```
+
+---
+
+## Database Setup
+
+### `setup_mariadb`
+
+Install MariaDB server.
+
+```bash
+setup_mariadb
+```
+
+### `setup_mariadb_db`
+
+Create a MariaDB database and user. Sets `$MARIADB_DB_PASS` with the generated password.
+
+```bash
+setup_mariadb
+MARIADB_DB_NAME="myapp_db" MARIADB_DB_USER="myapp_user" setup_mariadb_db
+
+# After calling, these variables are available:
+# $MARIADB_DB_NAME - Database name
+# $MARIADB_DB_USER - Database user
+# $MARIADB_DB_PASS - Generated password (saved to ~/[appname].creds)
+```
+
+### `setup_mysql`
+
+Install MySQL server.
+
+```bash
+setup_mysql
+```
+
+### `setup_postgresql`
+
+Install PostgreSQL server.
+
+```bash
+# Default (PostgreSQL 17)
+setup_postgresql
+
+# Specific version
+PG_VERSION="16" setup_postgresql
+PG_VERSION="17" setup_postgresql
+```
+
+### `setup_postgresql_db`
+
+Create a PostgreSQL database and user. Sets `$PG_DB_PASS` with the generated password.
+
+```bash
+PG_VERSION="17" setup_postgresql
+PG_DB_NAME="myapp_db" PG_DB_USER="myapp_user" setup_postgresql_db
+
+# After calling, these variables are available:
+# $PG_DB_NAME - Database name
+# $PG_DB_USER - Database user
+# $PG_DB_PASS - Generated password (saved to ~/[appname].creds)
+```
+
+### `setup_mongodb`
+
+Install MongoDB server.
+
+```bash
+setup_mongodb
+```
+
+### `setup_clickhouse`
+
+Install ClickHouse analytics database.
+
+```bash
+setup_clickhouse
+```
+
+---
+
+## GitHub Release Helpers
+
+> **Note**: `fetch_and_deploy_gh_release` is the **preferred method** for downloading GitHub releases. It handles version tracking automatically. Only use `get_latest_github_release` if you need the version number separately.
+
+### `fetch_and_deploy_gh_release`
+
+**Primary method** for downloading and extracting GitHub releases. Handles version tracking automatically.
+
+```bash
+# Basic usage - downloads tarball to /opt/appname
+fetch_and_deploy_gh_release "appname" "owner/repo"
+
+# With explicit parameters
+fetch_and_deploy_gh_release "appname" "owner/repo" "tarball" "latest" "/opt/appname"
+
+# Pre-built release with specific asset pattern
+fetch_and_deploy_gh_release "koel" "koel/koel" "prebuild" "latest" "/opt/koel" "koel-*.tar.gz"
+
+# Clean install (removes old directory first) - used in update_script
+CLEAN_INSTALL=1 fetch_and_deploy_gh_release "appname" "owner/repo" "tarball" "latest" "/opt/appname"
+```
+
+**Parameters:**
+| Parameter | Default | Description |
+|-----------|---------|-------------|
+| `name` | required | App name (for version tracking) |
+| `repo` | required | GitHub repo (`owner/repo`) |
+| `type` | `tarball` | Release type: `tarball`, `zipball`, `prebuild`, `binary` |
+| `version` | `latest` | Version tag or `latest` |
+| `dest` | `/opt/[name]` | Destination directory |
+| `asset_pattern` | `""` | For `prebuild`: glob pattern to match asset (e.g. `app-*.tar.gz`) |
+
+**Environment Variables:**
+| Variable | Description |
+|----------|-------------|
+| `CLEAN_INSTALL=1` | Remove destination directory before extracting (for updates) |
+
+### `check_for_gh_release`
+
+Check if a newer version is available. Returns 0 if update needed, 1 if already at latest. **Use in `update_script()` function.**
+
+```bash
+# In update_script() function in ct/appname.sh
+if check_for_gh_release "appname" "owner/repo"; then
+  msg_info "Updating..."
+  # Stop services, backup, update, restore, start
+  CLEAN_INSTALL=1 fetch_and_deploy_gh_release "appname" "owner/repo"
+  msg_ok "Updated successfully"
+fi
+```
+
+### `get_latest_github_release`
+
+Get the latest release version from a GitHub repository. **Only use if you need the version number separately** (e.g., for manual download or display).
+
+```bash
+RELEASE=$(get_latest_github_release "owner/repo")
+echo "Latest version: $RELEASE"
+```
+
+# Examples
+
+fetch_and_deploy_gh_release "bookstack" "BookStackApp/BookStack"
+fetch_and_deploy_gh_release "appname" "owner/repo" "tarball" "latest" "/opt/myapp"
+
+````
+
+**Parameters:**
+| Parameter | Default | Description |
+|-----------|---------|-------------|
+| `name` | required | App name (for version tracking) |
+| `repo` | required | GitHub repo (`owner/repo`) |
+| `type` | `tarball` | Release type: `tarball`, `zipball`, `binary` |
+| `version` | `latest` | Version tag or `latest` |
+| `dest` | `/opt/[name]` | Destination directory |
+
+---
+
+## Tools & Utilities
+
+### `setup_yq`
+
+Install yq YAML processor.
+
+```bash
+setup_yq
+
+# Use in script
+yq '.server.port = 8080' -i config.yaml
+````
+
+### `setup_ffmpeg`
+
+Install FFmpeg with common codecs.
+
+```bash
+setup_ffmpeg
+```
+
+### `setup_hwaccel`
+
+Setup GPU hardware acceleration (Intel/AMD/NVIDIA).
+
+```bash
+# Only runs if GPU passthrough is detected (/dev/dri, /dev/nvidia0, /dev/kfd)
+setup_hwaccel
+```
+
+### `setup_imagemagick`
+
+Install ImageMagick 7 from source.
+
+```bash
+setup_imagemagick
+```
+
+### `setup_docker`
+
+Install Docker Engine.
+
+```bash
+setup_docker
+```
+
+### `setup_adminer`
+
+Install Adminer for database management.
+
+```bash
+setup_mariadb
+setup_adminer
+
+# Access at http://IP/adminer
+```
+
+---
+
+## SSL/TLS
+
+### `create_self_signed_cert`
+
+Create a self-signed SSL certificate.
+
+```bash
+create_self_signed_cert
+
+# Creates files at:
+# /etc/ssl/[appname]/[appname].key
+# /etc/ssl/[appname]/[appname].crt
+```
+
+---
+
+## Utility Functions
+
+### `import_local_ip`
+
+Set the `$LOCAL_IP` variable with the container's IP address.
+
+```bash
+import_local_ip
+echo "Container IP: $LOCAL_IP"
+
+# Use in config files
+sed -i "s/localhost/$LOCAL_IP/g" /opt/myapp/config.yaml
+```
+
+### `ensure_dependencies`
+
+Ensure packages are installed (installs if missing).
+
+```bash
+ensure_dependencies "jq" "unzip" "curl"
+```
+
+### `msg_info` / `msg_ok` / `msg_error` / `msg_warn`
+
+Display formatted messages.
+
+```bash
+msg_info "Installing application..."
+# ... do work ...
+msg_ok "Installation complete"
+
+msg_warn "Optional feature not available"
+msg_error "Installation failed"
+```
+
+---
+
+## Package Management
+
+### `cleanup_lxc`
+
+Final cleanup function - call at end of install script.
+
+```bash
+# At the end of your install script
+motd_ssh
+customize
+cleanup_lxc  # Handles autoremove, autoclean, cache cleanup
+```
+
+### `install_packages_with_retry`
+
+Install packages with automatic retry on failure.
+
+```bash
+install_packages_with_retry "package1" "package2" "package3"
+```
+
+### `prepare_repository_setup`
+
+Prepare system for adding new repositories (cleanup old repos, keyrings).
+
+```bash
+prepare_repository_setup "mariadb" "mysql"
+```
+
+---
+
+## Complete Examples
+
+### Example 1: Node.js App with PostgreSQL (install script)
+
+```bash
+#!/usr/bin/env bash
+
+# Copyright (c) 2021-2025 community-scripts ORG
+# Author: YourUsername
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://github.com/example/myapp
+
+source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+msg_info "Installing Dependencies"
+$STD apt install -y nginx
+msg_ok "Installed Dependencies"
+
+# Setup runtimes and databases FIRST
+NODE_VERSION="22" setup_nodejs
+PG_VERSION="17" setup_postgresql
+PG_DB_NAME="myapp" PG_DB_USER="myapp" setup_postgresql_db
+import_local_ip
+
+# Download app using fetch_and_deploy (handles version tracking)
+fetch_and_deploy_gh_release "myapp" "example/myapp" "tarball" "latest" "/opt/myapp"
+
+msg_info "Setting up MyApp"
+cd /opt/myapp
+$STD npm ci --production
+msg_ok "Setup MyApp"
+
+msg_info "Configuring MyApp"
+cat <<EOF >/opt/myapp/.env
+DATABASE_URL=postgresql://${PG_DB_USER}:${PG_DB_PASS}@localhost/${PG_DB_NAME}
+HOST=${LOCAL_IP}
+PORT=3000
+EOF
+msg_ok "Configured MyApp"
+
+msg_info "Creating Service"
+cat <<EOF >/etc/systemd/system/myapp.service
+[Unit]
+Description=MyApp
+After=network.target postgresql.service
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/myapp
+ExecStart=/usr/bin/node /opt/myapp/server.js
+Restart=on-failure
+
+[Install]
+WantedBy=multi-user.target
+EOF
+systemctl enable -q --now myapp
+msg_ok "Created Service"
+
+motd_ssh
+customize
+cleanup_lxc
+```
+
+### Example 2: Matching Container Script (ct script)
+
+```bash
+#!/usr/bin/env bash
+source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)
+# Copyright (c) 2021-2025 community-scripts ORG
+# Author: YourUsername
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://github.com/example/myapp
+
+APP="MyApp"
+var_tags="${var_tags:-webapp}"
+var_cpu="${var_cpu:-2}"
+var_ram="${var_ram:-2048}"
+var_disk="${var_disk:-6}"
+var_os="${var_os:-debian}"
+var_version="${var_version:-12}"
+var_unprivileged="${var_unprivileged:-1}"
+
+header_info "$APP"
+variables
+color
+catch_errors
+
+function update_script() {
+  header_info
+  check_container_storage
+  check_container_resources
+
+  if [[ ! -d /opt/myapp ]]; then
+    msg_error "No ${APP} Installation Found!"
+    exit
+  fi
+
+  # check_for_gh_release returns true if update available
+  if check_for_gh_release "myapp" "example/myapp"; then
+    msg_info "Stopping Service"
+    systemctl stop myapp
+    msg_ok "Stopped Service"
+
+    msg_info "Creating Backup"
+    cp /opt/myapp/.env /tmp/myapp_env.bak
+    msg_ok "Created Backup"
+
+    # CLEAN_INSTALL=1 removes old dir before extracting
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "myapp" "example/myapp" "tarball" "latest" "/opt/myapp"
+
+    msg_info "Restoring Config & Rebuilding"
+    cp /tmp/myapp_env.bak /opt/myapp/.env
+    rm /tmp/myapp_env.bak
+    cd /opt/myapp
+    $STD npm ci --production
+    msg_ok "Restored Config & Rebuilt"
+
+    msg_info "Starting Service"
+    systemctl start myapp
+    msg_ok "Started Service"
+
+    msg_ok "Updated Successfully"
+  fi
+  exit
+}
+
+start
+build_container
+description
+
+msg_ok "Completed Successfully!\n"
+echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
+echo -e "${INFO}${YW} Access it using the following URL:${CL}"
+echo -e "${TAB}${GATEWAY}${BGN}http://${IP}:3000${CL}"
+```
+
+### Example 3: PHP App with MariaDB (install script)
+
+```bash
+#!/usr/bin/env bash
+
+source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+msg_info "Installing Dependencies"
+$STD apt install -y nginx
+msg_ok "Installed Dependencies"
+
+# PHP with FPM and common modules
+PHP_VERSION="8.4" PHP_FPM="YES" PHP_MODULE="bcmath,curl,gd,intl,mbstring,mysql,xml,zip" setup_php
+setup_composer
+setup_mariadb
+MARIADB_DB_NAME="myapp" MARIADB_DB_USER="myapp" setup_mariadb_db
+import_local_ip
+
+# Download pre-built release (with asset pattern)
+fetch_and_deploy_gh_release "myapp" "example/myapp" "prebuild" "latest" "/opt/myapp" "myapp-*.tar.gz"
+
+msg_info "Configuring MyApp"
+cd /opt/myapp
+cp .env.example .env
+sed -i "s|APP_URL=.*|APP_URL=http://${LOCAL_IP}|" .env
+sed -i "s|DB_DATABASE=.*|DB_DATABASE=${MARIADB_DB_NAME}|" .env
+sed -i "s|DB_USERNAME=.*|DB_USERNAME=${MARIADB_DB_USER}|" .env
+sed -i "s|DB_PASSWORD=.*|DB_PASSWORD=${MARIADB_DB_PASS}|" .env
+$STD composer install --no-dev --no-interaction
+$STD php artisan key:generate --force
+$STD php artisan migrate --force
+chown -R www-data:www-data /opt/myapp
+msg_ok "Configured MyApp"
+
+# ... nginx config, service creation ...
+
+motd_ssh
+customize
+cleanup_lxc
+```
diff --git a/docs/contribution/README.md b/docs/contribution/README.md
index 7737b6418..fa65ca12d 100644
--- a/docs/contribution/README.md
+++ b/docs/contribution/README.md
@@ -65,6 +65,7 @@ bash docs/contribution/setup-fork.sh
 ```
 
 This will:
+
 - Auto-detect your GitHub username
 - Update all documentation links to point to your fork
 - Create `.git-setup-info` with recommended git workflows
@@ -97,6 +98,8 @@ All scripts and configurations must follow our coding standards to ensure consis
 
 - **[CONTRIBUTING.md](CONTRIBUTING.md)** - Essential coding standards and best practices
 - **[CODE_AUDIT.md](CODE_AUDIT.md)** - Code review checklist and audit procedures
+- **[GUIDE.md](GUIDE.md)** - Comprehensive contribution guide
+- **[HELPER_FUNCTIONS.md](HELPER_FUNCTIONS.md)** - Reference for all tools.func helper functions
 - **Container Scripts** - `/ct/` templates and guidelines
 - **Install Scripts** - `/install/` templates and guidelines
 - **JSON Configurations** - `/json/` structure and format
@@ -121,6 +124,7 @@ Before submitting a pull request, ensure your code passes our audit:
 **See**: [CODE_AUDIT.md](CODE_AUDIT.md) for complete audit checklist
 
 Key points:
+
 - Code consistency with existing scripts
 - Proper error handling
 - Correct variable naming
@@ -145,6 +149,7 @@ Key points:
 ### Community Guides
 
 See [USER_SUBMITTED_GUIDES.md](USER_SUBMITTED_GUIDES.md) for excellent community-written guides:
+
 - Home Assistant installation and configuration
 - Frigate setup on Proxmox
 - Docker and Portainer installation
@@ -156,16 +161,24 @@ See [USER_SUBMITTED_GUIDES.md](USER_SUBMITTED_GUIDES.md) for excellent community
 Use these templates when creating new scripts:
 
 ```bash
-# Container script
-cp ct/example.sh ct/my-app.sh
+# Container script template
+cp docs/contribution/templates_ct/AppName.sh ct/my-app.sh
 
-# Installation script
-cp install/example-install.sh install/my-app-install.sh
+# Installation script template
+cp docs/contribution/templates_install/AppName-install.sh install/my-app-install.sh
 
-# JSON configuration (if needed)
-cp json/example.json json/my-app.json
+# JSON configuration template
+cp docs/contribution/templates_json/AppName.json frontend/public/json/my-app.json
 ```
 
+**Template Features:**
+
+- Updated to match current codebase patterns
+- Includes all available helper functions from `tools.func`
+- Examples for Node.js, Python, PHP, Go applications
+- Database setup examples (MariaDB, PostgreSQL)
+- Proper service creation and cleanup
+
 ---
 
 ## 🔄 Git Workflow
@@ -202,18 +215,21 @@ git push origin feature/my-feature
 ### Before Submitting PR
 
 1. **Sync with upstream**
+
    ```bash
    git fetch upstream
    git rebase upstream/main
    ```
 
 2. **Test your changes**
+
    ```bash
    bash ct/my-app.sh
    # Follow prompts and test the container
    ```
 
 3. **Check code standards**
+
    - [ ] Follows template structure
    - [ ] Proper error handling
    - [ ] Documentation updated (if needed)
diff --git a/docs/contribution/templates_ct/AppName.sh b/docs/contribution/templates_ct/AppName.sh
index 14c0244eb..aea058660 100644
--- a/docs/contribution/templates_ct/AppName.sh
+++ b/docs/contribution/templates_ct/AppName.sh
@@ -1,27 +1,31 @@
 #!/usr/bin/env bash
-source <(curl -s https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)
+source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)
 # Copyright (c) 2021-2025 community-scripts ORG
-# Author: [YourUserName]
+# Author: [YourGitHubUsername]
 # License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
-# Source: [SOURCE_URL]
+# Source: [SOURCE_URL e.g. https://github.com/example/app]
 
 # App Default Values
-APP="[APP_NAME]"
-# Name of the app (e.g. Google, Adventurelog, Apache-Guacamole"
-var_tags="[TAGS]"
-# Tags for Proxmox VE, maximum 2 pcs., no spaces allowed, separated by a semicolon ; (e.g. database | adblock;dhcp)
-var_cpu="[CPU]"
-# Number of cores (1-X) (e.g. 4) - default are 2
-var_ram="[RAM]"
-# Amount of used RAM in MB (e.g. 2048 or 4096)
-var_disk="[DISK]"
-# Amount of used disk space in GB (e.g. 4 or 10)
-var_os="[OS]"
-# Default OS (e.g. debian, ubuntu, alpine)
-var_version="[VERSION]"
-# Default OS version (e.g. 12 for debian, 24.04 for ubuntu, 3.20 for alpine)
-var_unprivileged="[UNPRIVILEGED]"
-# 1 = unprivileged container, 0 = privileged container
+APP="[AppName]"
+var_tags="${var_tags:-[category]}"
+var_cpu="${var_cpu:-2}"
+var_ram="${var_ram:-2048}"
+var_disk="${var_disk:-4}"
+var_os="${var_os:-debian}"
+var_version="${var_version:-12}"
+var_unprivileged="${var_unprivileged:-1}"
+
+# =============================================================================
+# CONFIGURATION GUIDE
+# =============================================================================
+# APP           - Display name, title case (e.g. "Koel", "Wallabag", "Actual Budget")
+# var_tags      - Max 2 tags, semicolon separated (e.g. "music;streaming", "finance")
+# var_cpu       - CPU cores: 1-4 typical
+# var_ram       - RAM in MB: 512, 1024, 2048, 4096 typical
+# var_disk      - Disk in GB: 4, 6, 8, 10, 20 typical
+# var_os        - OS: debian, ubuntu, alpine
+# var_version   - OS version: 12/13 (debian), 22.04/24.04 (ubuntu), 3.20/3.21 (alpine)
+# var_unprivileged - 1 = unprivileged (secure, default), 0 = privileged (for docker etc.)
 
 header_info "$APP"
 variables
@@ -29,51 +33,55 @@ color
 catch_errors
 
 function update_script() {
-    header_info
-    check_container_storage
-    check_container_resources
+  header_info
+  check_container_storage
+  check_container_resources
 
-    # Check if installation is present | -f for file, -d for folder
-    if [[ ! -f [INSTALLATION_CHECK_PATH] ]]; then
-        msg_error "No ${APP} Installation Found!"
-        exit
-    fi
-
-    # Crawling the new version and checking whether an update is required
-    RELEASE=$(curl -fsSL [RELEASE_URL] | [PARSE_RELEASE_COMMAND])
-    if [[ "${RELEASE}" != "$(cat /opt/${APP}_version.txt)" ]] || [[ ! -f /opt/${APP}_version.txt ]]; then
-        # Stopping Services
-        msg_info "Stopping $APP"
-        systemctl stop [SERVICE_NAME]
-        msg_ok "Stopped $APP"
-
-        # Creating Backup
-        msg_info "Creating Backup"
-        tar -czf "/opt/${APP}_backup_$(date +%F).tar.gz" [IMPORTANT_PATHS]
-        msg_ok "Backup Created"
-
-        # Execute Update
-        msg_info "Updating $APP to v${RELEASE}"
-        [UPDATE_COMMANDS]
-        msg_ok "Updated $APP to v${RELEASE}"
-
-        # Starting Services
-        msg_info "Starting $APP"
-        systemctl start [SERVICE_NAME]
-        msg_ok "Started $APP"
-
-        # Cleaning up
-        msg_info "Cleaning Up"
-        rm -rf [TEMP_FILES]
-        msg_ok "Cleanup Completed"
-
-        # Last Action
-        echo "${RELEASE}" >/opt/${APP}_version.txt
-        msg_ok "Update Successful"
-    else
-        msg_ok "No update required. ${APP} is already at v${RELEASE}"
-    fi
+  # Check if installation exists
+  if [[ ! -d /opt/[appname] ]]; then
+    msg_error "No ${APP} Installation Found!"
     exit
+  fi
+
+  # check_for_gh_release returns 0 (true) if update available, 1 (false) if not
+  if check_for_gh_release "[appname]" "[owner/repo]"; then
+    msg_info "Stopping Services"
+    systemctl stop [appname]
+    msg_ok "Stopped Services"
+
+    # Optional: Backup important data before update
+    msg_info "Creating Backup"
+    mkdir -p /tmp/[appname]_backup
+    cp /opt/[appname]/.env /tmp/[appname]_backup/ 2>/dev/null || true
+    cp -r /opt/[appname]/data /tmp/[appname]_backup/ 2>/dev/null || true
+    msg_ok "Created Backup"
+
+    # CLEAN_INSTALL=1 removes old directory before extracting new version
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "[appname]" "[owner/repo]" "tarball" "latest" "/opt/[appname]"
+
+    # Restore configuration and data
+    msg_info "Restoring Data"
+    cp /tmp/[appname]_backup/.env /opt/[appname]/ 2>/dev/null || true
+    cp -r /tmp/[appname]_backup/data/* /opt/[appname]/data/ 2>/dev/null || true
+    rm -rf /tmp/[appname]_backup
+    msg_ok "Restored Data"
+
+    # Optional: Run any post-update commands
+    msg_info "Running Post-Update Tasks"
+    cd /opt/[appname]
+    # Examples:
+    # $STD npm ci --production
+    # $STD php artisan migrate --force
+    # $STD composer install --no-dev
+    msg_ok "Ran Post-Update Tasks"
+
+    msg_info "Starting Services"
+    systemctl start [appname]
+    msg_ok "Started Services"
+
+    msg_ok "Updated Successfully"
+  fi
+  exit
 }
 
 start
diff --git a/docs/contribution/templates_install/AppName-install.sh b/docs/contribution/templates_install/AppName-install.sh
index 27e6b8f4e..ac861c2ec 100644
--- a/docs/contribution/templates_install/AppName-install.sh
+++ b/docs/contribution/templates_install/AppName-install.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 
 # Copyright (c) 2021-2025 community-scripts ORG
-# Author: [YourUserName]
+# Author: [YourGitHubUsername]
 # License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
-# Source: [SOURCE_URL]
+# Source: [SOURCE_URL e.g. https://github.com/example/app]
 
-# Import Functions und Setup
+# Import Functions and Setup
 source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
 color
 verb_ip6
@@ -14,70 +14,177 @@ setting_up_container
 network_check
 update_os
 
-# Installing Dependencies with the 3 core dependencies (curl;sudo;mc)
+# =============================================================================
+# DEPENDENCIES
+# =============================================================================
+# Only install what's actually needed - curl/sudo/mc are already in the base image
+
 msg_info "Installing Dependencies"
-$STD apt-get install -y \
-  curl \
-  sudo \
-  mc \
-  [PACKAGE_1] \
-  [PACKAGE_2] \
-  [PACKAGE_3]
+$STD apt install -y \
+  nginx \
+  build-essential
 msg_ok "Installed Dependencies"
 
-# Template: MySQL Database
-msg_info "Setting up Database"
-DB_NAME=[DB_NAME]
-DB_USER=[DB_USER]
-DB_PASS=$(openssl rand -base64 18 | tr -dc 'a-zA-Z0-9' | head -c13)
-$STD mysql -u root -e "CREATE DATABASE $DB_NAME;"
-$STD mysql -u root -e "CREATE USER '$DB_USER'@'localhost' IDENTIFIED WITH mysql_native_password AS PASSWORD('$DB_PASS');"
-$STD mysql -u root -e "GRANT ALL ON $DB_NAME.* TO '$DB_USER'@'localhost'; FLUSH PRIVILEGES;"
-{
-  echo "${APPLICATION} Credentials"
-  echo "Database User: $DB_USER"
-  echo "Database Password: $DB_PASS"
-  echo "Database Name: $DB_NAME"
-} >>~/$APP_NAME.creds
-msg_ok "Set up Database"
-
-# Temp
-
-# Setup App
-msg_info "Setup ${APPLICATION}"
-RELEASE=$(curl -s https://api.github.com/repos/[REPO]/releases/latest | grep "tag_name" | awk '{print substr($2, 2, length($2)-3) }')
-curl -fsSL "https://github.com/[REPO]/archive/refs/tags/${RELEASE}.zip"
-unzip -q ${RELEASE}.zip
-mv ${APPLICATION}-${RELEASE}/ /opt/${APPLICATION}
+# =============================================================================
+# HELPER FUNCTIONS FROM tools.func
+# =============================================================================
+# These functions are available via $FUNCTIONS_FILE_PATH (tools.func)
+# Call them with optional environment variables for configuration
 #
+# --- Runtime & Language Setup ---
+# NODE_VERSION="22" setup_nodejs           # Install Node.js (22, 24)
+# NODE_VERSION="24" NODE_MODULE="pnpm" setup_nodejs  # With pnpm
+# PYTHON_VERSION="3.13" setup_uv           # Python with uv package manager
+# setup_go                                 # Install Go (latest)
+# setup_rust                               # Install Rust via rustup
+# setup_ruby                               # Install Ruby
+# PHP_VERSION="8.4" PHP_FPM="YES" PHP_MODULE="mysqli,gd" setup_php
+# PHP_VERSION="8.3" PHP_FPM="YES" PHP_APACHE="YES" PHP_MODULE="bcmath,curl,gd,intl,mbstring,mysql,xml,zip" setup_php
+# setup_composer                           # Install PHP Composer
+# JAVA_VERSION="21" setup_java             # Install Java (17, 21)
 #
+# --- Database Setup ---
+# setup_mariadb                            # Install MariaDB server
+# MARIADB_DB_NAME="mydb" MARIADB_DB_USER="myuser" setup_mariadb_db
+# setup_mysql                              # Install MySQL server
+# PG_VERSION="17" setup_postgresql         # Install PostgreSQL (16, 17)
+# PG_VERSION="17" PG_MODULES="postgis" setup_postgresql  # With extensions
+# PG_DB_NAME="mydb" PG_DB_USER="myuser" setup_postgresql_db
+# setup_mongodb                            # Install MongoDB
 #
-echo "${RELEASE}" >/opt/${APPLICATION}_version.txt
-msg_ok "Setup ${APPLICATION}"
+# --- GitHub Release (PREFERRED METHOD) ---
+# fetch_and_deploy_gh_release "appname" "owner/repo"  # Downloads, extracts, tracks version
+# fetch_and_deploy_gh_release "appname" "owner/repo" "tarball" "latest" "/opt/appname"
+# fetch_and_deploy_gh_release "appname" "owner/repo" "prebuild" "latest" "/opt/appname" "app-*.tar.gz"
+#
+# --- Tools & Utilities ---
+# import_local_ip                          # Sets $LOCAL_IP variable (call early!)
+# setup_ffmpeg                             # Install FFmpeg with codecs
+# setup_hwaccel                            # Setup GPU hardware acceleration
+# setup_imagemagick                        # Install ImageMagick 7
+# setup_docker                             # Install Docker Engine
+# setup_adminer                            # Install Adminer for DB management
+# create_self_signed_cert                  # Creates cert in /etc/ssl/[appname]/
+
+# =============================================================================
+# EXAMPLE 1: Node.js Application with PostgreSQL
+# =============================================================================
+# NODE_VERSION="22" setup_nodejs
+# PG_VERSION="17" setup_postgresql
+# PG_DB_NAME="myapp" PG_DB_USER="myapp" setup_postgresql_db
+# import_local_ip
+# fetch_and_deploy_gh_release "myapp" "owner/myapp" "tarball" "latest" "/opt/myapp"
+#
+# msg_info "Configuring MyApp"
+# cd /opt/myapp
+# $STD npm ci
+# cat <<EOF >/opt/myapp/.env
+# DATABASE_URL=postgresql://${PG_DB_USER}:${PG_DB_PASS}@localhost/${PG_DB_NAME}
+# HOST=${LOCAL_IP}
+# PORT=3000
+# EOF
+# msg_ok "Configured MyApp"
+
+# =============================================================================
+# EXAMPLE 2: Python Application with uv
+# =============================================================================
+# PYTHON_VERSION="3.13" setup_uv
+# import_local_ip
+# fetch_and_deploy_gh_release "myapp" "owner/myapp" "tarball" "latest" "/opt/myapp"
+#
+# msg_info "Setting up MyApp"
+# cd /opt/myapp
+# $STD uv sync
+# cat <<EOF >/opt/myapp/.env
+# HOST=${LOCAL_IP}
+# PORT=8000
+# EOF
+# msg_ok "Setup MyApp"
+
+# =============================================================================
+# EXAMPLE 3: PHP Application with MariaDB + Nginx
+# =============================================================================
+# PHP_VERSION="8.4" PHP_FPM="YES" PHP_MODULE="bcmath,curl,gd,intl,mbstring,mysql,xml,zip" setup_php
+# setup_composer
+# setup_mariadb
+# MARIADB_DB_NAME="myapp" MARIADB_DB_USER="myapp" setup_mariadb_db
+# import_local_ip
+# fetch_and_deploy_gh_release "myapp" "owner/myapp" "prebuild" "latest" "/opt/myapp" "myapp-*.tar.gz"
+#
+# msg_info "Configuring MyApp"
+# cd /opt/myapp
+# cp .env.example .env
+# sed -i "s|APP_URL=.*|APP_URL=http://${LOCAL_IP}|" .env
+# sed -i "s|DB_DATABASE=.*|DB_DATABASE=${MARIADB_DB_NAME}|" .env
+# sed -i "s|DB_USERNAME=.*|DB_USERNAME=${MARIADB_DB_USER}|" .env
+# sed -i "s|DB_PASSWORD=.*|DB_PASSWORD=${MARIADB_DB_PASS}|" .env
+# $STD composer install --no-dev --no-interaction
+# chown -R www-data:www-data /opt/myapp
+# msg_ok "Configured MyApp"
+
+# =============================================================================
+# YOUR APPLICATION INSTALLATION
+# =============================================================================
+# 1. Setup runtimes and databases FIRST
+# 2. Call import_local_ip if you need the container IP
+# 3. Use fetch_and_deploy_gh_release to download the app (handles version tracking)
+# 4. Configure the application
+# 5. Create systemd service
+# 6. Finalize with motd_ssh, customize, cleanup_lxc
+
+# --- Setup runtimes/databases ---
+NODE_VERSION="22" setup_nodejs
+import_local_ip
+
+# --- Download and install app ---
+fetch_and_deploy_gh_release "[appname]" "[owner/repo]" "tarball" "latest" "/opt/[appname]"
+
+msg_info "Setting up [AppName]"
+cd /opt/[appname]
+$STD npm ci
+msg_ok "Setup [AppName]"
+
+# =============================================================================
+# CONFIGURATION
+# =============================================================================
+
+msg_info "Configuring [AppName]"
+cat <<EOF >/opt/[appname]/.env
+HOST=${LOCAL_IP}
+PORT=8080
+EOF
+msg_ok "Configured [AppName]"
+
+# =============================================================================
+# SERVICE CREATION
+# =============================================================================
 
-# Creating Service (if needed)
 msg_info "Creating Service"
-cat <<EOF >/etc/systemd/system/${APPLICATION}.service
+cat <<EOF >/etc/systemd/system/[appname].service
 [Unit]
-Description=${APPLICATION} Service
+Description=[AppName] Service
 After=network.target
 
 [Service]
-ExecStart=[START_COMMAND]
-Restart=always
+Type=simple
+User=root
+WorkingDirectory=/opt/[appname]
+ExecStart=/usr/bin/node /opt/[appname]/server.js
+Restart=on-failure
+RestartSec=5
 
 [Install]
 WantedBy=multi-user.target
 EOF
-systemctl enable -q --now ${APPLICATION}.service
+systemctl enable -q --now [appname]
 msg_ok "Created Service"
 
+# =============================================================================
+# CLEANUP & FINALIZATION
+# =============================================================================
+
 motd_ssh
 customize
 
-# Cleanup
-msg_info "Cleaning up"
-rm -f ${RELEASE}.zip
-$STD apt-get -y autoremove
-$STD apt-get -y autoclean
-msg_ok "Cleaned"
+# cleanup_lxc handles: apt autoremove, autoclean, temp files, bash history
+cleanup_lxc
diff --git a/docs/contribution/templates_json/AppName.json b/docs/contribution/templates_json/AppName.json
index 746ebd916..8d621171c 100644
--- a/docs/contribution/templates_json/AppName.json
+++ b/docs/contribution/templates_json/AppName.json
@@ -1,34 +1,34 @@
 {
-    "name": "AppName",
-    "slug": "appname",
-    "categories": [
-        0
-    ],
-    "date_created": "DATE CREATED",
-    "type": "ct",
-    "updateable": true,
-    "privileged": false,
-    "interface_port": DEFAULT-PORT,
-    "documentation": null,
-    "website": "LINK TO WEBSITE",
-    "logo": "LINK TO LOGO",
-    "description": "Description of the app",
-    "install_methods": [
-        {
-            "type": "default",
-            "script": "ct/AppName.sh",
-            "resources": {
-                "cpu": 2,
-                "ram": 2048,
-                "hdd": 4,
-                "os": "debian",
-                "version": "12"
-            }
-        }
-    ],
-    "default_credentials": {
-        "username": null,
-        "password": null
-    },
-    "notes": []
-}
\ No newline at end of file
+  "name": "AppName",
+  "slug": "appname",
+  "categories": [
+    0
+  ],
+  "date_created": "DATE CREATED",
+  "type": "ct",
+  "updateable": true,
+  "privileged": false,
+  "interface_port": "DEFAULT-PORT",
+  "documentation": null,
+  "website": "LINK TO WEBSITE",
+  "logo": "LINK TO LOGO",
+  "description": "Description of the app",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/AppName.sh",
+      "resources": {
+        "cpu": 2,
+        "ram": 2048,
+        "hdd": 4,
+        "os": "debian",
+        "version": "12"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": null,
+    "password": null
+  },
+  "notes": []
+}