dotnetaspwebapi: start the service only once an app is deployed

The unit ran dotnet on a DLL that does not exist until the user uploads
their app, so a fresh container restarted it every 10 seconds forever.
The service is now skipped while the DLL is missing, and a path unit
starts it as soon as the file appears.

CHANGELOG.md

@@ -593,6 +593,10 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
     - Whisparr-eros: set the first login and save it [@MickLesk](https://github.com/MickLesk) ([#18617](https://github.com/community-scripts/ProxmoxVE/pull/18617))
 
+  - #### 💥 Breaking Changes
+
+    - 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))
+
 ### 📚 Documentation
 
   - pocketbase-bot: apply website metadata requests from Accept/Decline boxes [@MickLesk](https://github.com/MickLesk) ([#18631](https://github.com/community-scripts/ProxmoxVE/pull/18631))

ct/dotnetaspwebapi.sh

@@ -4,17 +4,17 @@ source "$_cs_boot" 2>/dev/null || source <(curl -fsSL "${COMMUNITY_SCRIPTS_CORE_
 # Copyright (c) 2021-2026 community-scripts ORG
 # Author: Kristian Skov
 # License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
-# Source: https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-nginx?view=aspnetcore-9.0&tabs=linux-ubuntu
+# Source: https://learn.microsoft.com/en-us/dotnet/core/install/linux-debian
 
 APP="Dotnet ASP Web API"
 var_tags="${var_tags:-web}"
 var_cpu="${var_cpu:-1}"
 var_ram="${var_ram:-1024}"
 var_disk="${var_disk:-8}"
-var_os="${var_os:-ubuntu}"
-var_version="${var_version:-24.04}"
+var_os="${var_os:-debian}"
+var_version="${var_version:-13}"
 var_arm64="${var_arm64:-yes}"
-var_unprivileged="${var_unprivileged:-0}"
+var_unprivileged="${var_unprivileged:-1}"
 
 header_info "$APP"
 variables
@@ -43,4 +43,4 @@ description
 msg_ok "Completed successfully!\n"
 echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
 echo -e "${INFO}${YW}Access it using the following IP:${CL}"
-echo -e "${GATEWAY}${BGN}${IP}:80${CL}"
+echo -e "${GATEWAY}${BGN}${IP}:80${CL}"

install/dotnetaspwebapi-install.sh

@@ -3,7 +3,7 @@
 # Copyright (c) 2021-2026 community-scripts ORG
 # Author: Kristian Skov
 # License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
-# Source: https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-nginx?view=aspnetcore-9.0&tabs=linux-ubuntu
+# Source: https://learn.microsoft.com/en-us/dotnet/core/install/linux-debian
 
 source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
 color
@@ -14,21 +14,36 @@ network_check
 update_os
 
 msg_info "Installing Dependencies"
-apt_update_safe
 $STD apt install -y \
-  ssh \
-  software-properties-common
-
-$STD add-apt-repository -y ppa:dotnet/backports
-$STD apt install -y \
-  dotnet-sdk-9.0 \
   vsftpd \
   nginx
 msg_ok "Installed Dependencies"
 
-var_project_name="${var_project_name:-}"
-[[ -n "$var_project_name" ]] || read -r -p "${TAB3}Type the assembly name of the project: " var_project_name || true
-[[ -n "$var_project_name" ]] || { msg_error "No assembly name given; set var_project_name or answer the prompt"; exit 64; }
+setup_deb822_repo \
+  "microsoft" \
+  "https://packages.microsoft.com/keys/microsoft-2025.asc" \
+  "https://packages.microsoft.com/debian/13/prod/" \
+  "trixie" \
+  "main"
+
+if [[ -z "${var_dotnet_version:-}" && -t 0 ]]; then
+  read -r -t 60 -p "${TAB3}.NET SDK version, 10 (LTS) or 11 [10]: " var_dotnet_version || echo
+fi
+var_dotnet_version="${var_dotnet_version:-10}"
+var_dotnet_version="${var_dotnet_version%%.*}"
+if ! apt-cache show "dotnet-sdk-${var_dotnet_version}.0" &>/dev/null; then
+  msg_warn ".NET SDK ${var_dotnet_version} is not available for this system, using 10"
+  var_dotnet_version="10"
+fi
+
+if [[ -z "${var_project_name:-}" && -t 0 ]]; then
+  read -r -t 60 -p "${TAB3}Assembly name of the project [testproject]: " var_project_name || echo
+fi
+var_project_name="${var_project_name:-testproject}"
+
+msg_info "Installing .NET SDK ${var_dotnet_version}"
+$STD apt install -y "dotnet-sdk-${var_dotnet_version}.0"
+msg_ok "Installed .NET SDK ${var_dotnet_version}"
 
 msg_info "Setting up FTP Server"
 useradd ftpuser
@@ -55,7 +70,7 @@ msg_ok "FTP server setup completed"
 msg_info "Setting up Nginx Server"
 rm -f /var/www/html/index.nginx-debian.html
 
-sed "s/\$var_project_name/$var_project_name/g" >myfile <<'EOF' >/etc/nginx/sites-available/default
+sed "s/\$var_project_name/$var_project_name/g" <<'EOF' >/etc/nginx/sites-available/default
 map $http_connection $connection_upgrade {
   "~*Upgrade" $http_connection;
   default keep-alive;
@@ -82,12 +97,12 @@ msg_info "Creating Service"
 cat <<EOF >/etc/systemd/system/kestrel-aspnetapi.service
 [Unit]
 Description=.NET Web API App running on Linux
+ConditionPathExists=/var/www/html/$var_project_name.dll
 
 [Service]
 WorkingDirectory=/var/www/html
 ExecStart=/usr/bin/dotnet /var/www/html/$var_project_name.dll
 Restart=always
-# Restart service after 10 seconds if the dotnet service crashes:
 RestartSec=10
 KillSignal=SIGINT
 SyslogIdentifier=dotnet-${var_project_name}
@@ -98,7 +113,18 @@ Environment=DOTNET_NOLOGO=true
 [Install]
 WantedBy=multi-user.target
 EOF
-systemctl enable -q --now kestrel-aspnetapi
+cat <<EOF >/etc/systemd/system/kestrel-aspnetapi.path
+[Unit]
+Description=Start the .NET Web API App once it is deployed
+
+[Path]
+PathExists=/var/www/html/$var_project_name.dll
+
+[Install]
+WantedBy=multi-user.target
+EOF
+systemctl enable -q kestrel-aspnetapi
+systemctl enable -q --now kestrel-aspnetapi.path
 msg_ok "Created Service"
 
 motd_ssh