Add langflow (ct)

Warpgate answers 401 on its root, a login wall, and the check failed it
(DevScripts issue 2537). Any answer now counts as the app being up,
except no answer, 404/410, a 5xx or a redirect loop. Same rule for VMs.

.github/workflows/scripts/pve-run-script.sh

@@ -373,6 +373,20 @@ setup_error() {
   exit 1
 }
 
+# Any answer means the app is up, unless it says it isn't: nothing at all,
+# 404/410 (the printed URL leads nowhere), 5xx (server error, proxy without
+# backend), or a 3xx left after 5 redirects (a loop). 401/403 are a login
+# wall (warpgate answers 401), 400 a quirk of the app: both pass.
+url_ok() { [[ "$1" =~ ^[1-4][0-9][0-9]$ && ! "$1" =~ ^(3[0-9][0-9]|404|410)$ ]]; }
+url_why() {
+  case "$1" in
+  404 | 410) echo "the printed URL leads nowhere" ;;
+  5??) echo "server error" ;;
+  3??) echo "still redirecting after 5 hops" ;;
+  *) echo "the app never answered" ;;
+  esac
+}
+
 # --- Reserve a container ID ---------------------------------------------------
 # A lock file per ID, not just "first free one", because the engine only creates
 # the container minutes later and two jobs would otherwise pick the same ID.
@@ -615,8 +629,8 @@ take_screenshot() {
 }
 
 # Is the app up? No failed services, and the URL the script tells the user to
-# open, e.g. http://${IP}:1337/admin, answers 200 (after redirects, so a jump
-# to /login is fine). A script that prints no URL has no web UI to check.
+# open, e.g. http://${IP}:1337/admin, answers without an error (see url_ok;
+# redirects are followed, so a jump to /login is fine). A script that prints no URL has no web UI to check.
 # Run after the install and again after the update. Sets health_problem.
 app_url() { # the URL the script at $1 tells the user to open
   local pattern
@@ -639,13 +653,13 @@ check_health() {
   local waited
   for ((waited = 0; waited < URL_WAIT; waited += 5)); do
     http_code=$(curl -sk -L --max-redirs 5 -o /dev/null -w '%{http_code}' --max-time 10 "$url" || true)
-    [[ "$http_code" =~ ^2[0-9][0-9]$ ]] && break
+    url_ok "$http_code" && break
     sleep 5
   done
   # Also when the check fails: an error page explains more than a status code.
   [[ "$http_code" =~ ^[1-5][0-9][0-9]$ ]] && take_screenshot "$1"
-  [[ "$http_code" =~ ^2[0-9][0-9]$ ]] ||
-    { health_problem="${url} answered ${http_code/#000/nothing} instead of 200 within ${URL_WAIT}s"; return 1; }
+  url_ok "$http_code" ||
+    { health_problem="${url} answered ${http_code/#000/nothing} within ${URL_WAIT}s ($(url_why "$http_code"))"; return 1; }
 }
 
 check_health screenshot.png || fail "$health_problem"

.github/workflows/scripts/pve-run-vm.sh

@@ -121,7 +121,7 @@ vm_build_and_check() {
     for ((waited = 0; waited < VM_URL_WAIT; waited += 10)); do
       vm_running || fail "VM ${ctid} stopped by itself while its web UI was awaited"
       http_code=$(curl -sk -L --max-redirs 5 -o /dev/null -w '%{http_code}' --max-time 10 "$url" || true)
-      [[ "$http_code" =~ ^2[0-9][0-9]$ ]] && break
+      url_ok "$http_code" && break
       sleep 10
     done
     [[ "$http_code" =~ ^[1-5][0-9][0-9]$ ]] && take_screenshot screenshot.png
@@ -130,8 +130,8 @@ vm_build_and_check() {
     sleep 20
   fi
   [[ -s "$OUT_DIR/screenshot.png" ]] || vm_console_shot
-  if [[ -n "$url" && ! "$http_code" =~ ^2[0-9][0-9]$ ]]; then
-    fail "${url} answered ${http_code/#000/nothing} instead of 200 within ${VM_URL_WAIT}s"
+  if [[ -n "$url" ]] && ! url_ok "$http_code"; then
+    fail "${url} answered ${http_code/#000/nothing} within ${VM_URL_WAIT}s"
   fi
   vm_running || fail "VM ${ctid} stopped by itself"
 

CHANGELOG.md

@@ -581,6 +581,15 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
 </details>
 
+## 2026-11-13
+
+### 💾 Core
+
+  - fetch the install script before the container is created [@MickLesk](https://github.com/MickLesk) ([core#236](https://github.com/community-scripts/core/pull/236))
+- Download a corrupt local template again instead of keeping it [@MickLesk](https://github.com/MickLesk) ([core#235](https://github.com/community-scripts/core/pull/235))
+- core: say why a container stopped by itself during its setup [@MickLesk](https://github.com/MickLesk) ([core#234](https://github.com/community-scripts/core/pull/234))
+- Shield pct start and the template check from a closed console [@MickLesk](https://github.com/MickLesk) ([core#239](https://github.com/community-scripts/core/pull/239))
+
 ## 2026-11-12
 
 ### 🆕 New Scripts
@@ -591,6 +600,7 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
   - #### 🐞 Bug Fixes
 
+    - OnlyOffice: change ct port to 8083 [@MickLesk](https://github.com/MickLesk) ([#18642](https://github.com/community-scripts/ProxmoxVE/pull/18642))
     - dotnetaspwebapi: start the service only once an app is deployed [@MickLesk](https://github.com/MickLesk) ([#18639](https://github.com/community-scripts/ProxmoxVE/pull/18639))
     - Whisparr-eros: set the first login and save it [@MickLesk](https://github.com/MickLesk) ([#18617](https://github.com/community-scripts/ProxmoxVE/pull/18617))
 
@@ -598,6 +608,18 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
     - Updated ASP.NET Web App script to Debian and adds a .Net selection [@kris701](https://github.com/kris701) ([#18628](https://github.com/community-scripts/ProxmoxVE/pull/18628))
 
+### 💾 Core
+
+  - github: bump workflow actions to their current majors [@MickLesk](https://github.com/MickLesk) ([core#240](https://github.com/community-scripts/core/pull/240))
+- Say what the host sees when a container gets no address [@MickLesk](https://github.com/MickLesk) ([core#230](https://github.com/community-scripts/core/pull/230))
+- Fall back to public DNS for Alpine containers too [@MickLesk](https://github.com/MickLesk) ([core#231](https://github.com/community-scripts/core/pull/231))
+- Do not fail a finished install over the monitoring service [@MickLesk](https://github.com/MickLesk) ([core#232](https://github.com/community-scripts/core/pull/232))
+- Deploy a release by moving it, and stop on a full disk² [@MickLesk](https://github.com/MickLesk) ([core#233](https://github.com/community-scripts/core/pull/233))
+- core: say when pct create fails because timedatectl does not answer [@MickLesk](https://github.com/MickLesk) ([core#237](https://github.com/community-scripts/core/pull/237))
+- ref: stop calling every exit 255 a dpkg error [@MickLesk](https://github.com/MickLesk) ([core#238](https://github.com/community-scripts/core/pull/238))
+- Write uv's shell completions without STD [@MickLesk](https://github.com/MickLesk) ([core#241](https://github.com/community-scripts/core/pull/241))
+- Generate database passwords with random_password / Keep the database helpers' credentials files private [@MickLesk](https://github.com/MickLesk) ([core#242](https://github.com/community-scripts/core/pull/242))
+
 ### 📚 Documentation
 
   - github: bump workflow actions to their current majors [@MickLesk](https://github.com/MickLesk) ([#18637](https://github.com/community-scripts/ProxmoxVE/pull/18637))

ct/langflow.sh

@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+_cs_boot="${COMMUNITY_SCRIPTS_CORE_DIR:-$(dirname "${BASH_SOURCE[0]}")/../../core}/core/build.func"
+source "$_cs_boot" 2>/dev/null || source <(curl -fsSL "${COMMUNITY_SCRIPTS_CORE_URL:-https://raw.githubusercontent.com/community-scripts/core/main}/core/build.func")
+# Copyright (c) 2021-2026 community-scripts ORG
+# Author: MickLesk (CanbiZ)
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://github.com/langflow-ai/langflow
+
+APP="Langflow"
+var_tags="${var_tags:-ai;llm;agents}"
+var_cpu="${var_cpu:-2}"
+var_ram="${var_ram:-2048}"
+var_disk="${var_disk:-8}"
+var_os="${var_os:-debian}"
+var_version="${var_version:-13}"
+#var_arm64="${var_arm64:-no}" # unset = ask the user; set yes/no only when verified
+var_unprivileged="${var_unprivileged:-1}"
+
+export var_admin_user="${var_admin_user:-}"
+export var_admin_pass="${var_admin_pass:-}"
+
+header_info "$APP"
+variables
+color
+catch_errors
+
+function update_script() {
+  header_info
+  check_container_storage
+  check_container_resources
+
+  if [[ ! -d /opt/langflow ]]; then
+    msg_error "No ${APP} Installation Found!"
+    exit
+  fi
+
+  if check_for_gh_release "langflow" "langflow-ai/langflow"; then
+    msg_info "Stopping Langflow"
+    systemctl stop langflow
+    msg_ok "Stopped Langflow"
+
+    PYTHON_VERSION="3.14" USE_UVX="YES" setup_uv
+
+    msg_info "Updating Langflow"
+    $STD uv venv --clear --python 3.14 /opt/langflow/.venv
+    $STD uv pip install --python /opt/langflow/.venv/bin/python "langflow==${CHECK_UPDATE_RELEASE#v}"
+    cat <<EOF >~/.langflow
+${CHECK_UPDATE_RELEASE#v}
+EOF
+    msg_ok "Updated Langflow"
+
+    msg_info "Starting Langflow"
+    systemctl start langflow
+    msg_ok "Started Langflow"
+    msg_ok "Updated successfully!"
+  fi
+  exit
+}
+
+start
+build_container
+description
+
+msg_ok "Completed Successfully!\n"
+echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
+echo -e "${INFO}${YW}Access it using the following URL:${CL}"
+echo -e "${GATEWAY}${BGN}http://${IP}:7860${CL}"
+echo -e "${INFO}${YW}Login: LANGFLOW_SUPERUSER and LANGFLOW_SUPERUSER_PASSWORD in /opt/langflow_data/.env (inside the container)${CL}"

ct/onlyoffice.sh

@@ -52,4 +52,4 @@ 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:${CL}"
-echo -e "${GATEWAY}${BGN}http://${IP}${CL}"
+echo -e "${GATEWAY}${BGN}http://${IP}:8083${CL}"

install/langflow-install.sh

@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2021-2026 community-scripts ORG
+# Author: MickLesk (CanbiZ)
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://github.com/langflow-ai/langflow
+
+source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+NODE_VERSION="24" setup_nodejs
+PYTHON_VERSION="3.14" USE_UVX="YES" setup_uv
+
+LANGFLOW_VERSION="${var_appversion:-$(get_latest_github_release "langflow-ai/langflow")}"
+msg_info "Installing Langflow ${LANGFLOW_VERSION#v}"
+$STD uv venv --python 3.14 /opt/langflow/.venv
+$STD uv pip install --python /opt/langflow/.venv/bin/python "langflow==${LANGFLOW_VERSION#v}"
+cat <<EOF >~/.langflow
+${LANGFLOW_VERSION#v}
+EOF
+msg_ok "Installed Langflow ${LANGFLOW_VERSION#v}"
+
+msg_info "Configuring Langflow"
+mkdir -p /opt/langflow_data/logs
+cat <<EOF >/opt/langflow_data/.env
+LANGFLOW_HOST=0.0.0.0
+LANGFLOW_PORT=7860
+LANGFLOW_CONFIG_DIR=/opt/langflow_data
+LANGFLOW_DATABASE_URL=sqlite:////opt/langflow_data/langflow.db
+LANGFLOW_KNOWLEDGE_BASES_DIR=/opt/langflow_data/knowledge_bases
+LANGFLOW_LOG_FILE=/opt/langflow_data/logs/langflow.log
+LANGFLOW_SECRET_KEY=$(/opt/langflow/.venv/bin/python -c "from secrets import token_urlsafe; print(token_urlsafe(32))")
+LANGFLOW_AUTO_LOGIN=False
+LANGFLOW_SUPERUSER='${var_admin_user:-langflow}'
+LANGFLOW_SUPERUSER_PASSWORD='${var_admin_pass:-$(random_password)}'
+EOF
+chmod 600 /opt/langflow_data/.env
+msg_ok "Configured Langflow"
+
+msg_info "Creating Service"
+cat <<EOF >/etc/systemd/system/langflow.service
+[Unit]
+Description=Langflow
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/langflow_data
+EnvironmentFile=/opt/langflow_data/.env
+ExecStart=/opt/langflow/.venv/bin/langflow run
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+EOF
+systemctl enable -q --now langflow
+msg_ok "Created Service"
+
+motd_ssh
+customize
+cleanup_lxc