Add frontend container (nginx) with api proxy, restore two-container architecture

docker-compose.simple.yml

@@ -50,5 +50,32 @@ services:
       start_period: 40s
     restart: unless-stopped
 
+  frontend:
+    image: nginx:alpine
+    working_dir: /app
+    expose:
+      - "80"
+    command:
+      - sh
+      - '-c'
+      - |
+        apk add --no-cache git nodejs npm curl
+        git clone --depth 1 https://forgejo.media-on.de/Leopoldadmin/web-cad.git /tmp/repo
+        cd /tmp/repo/frontend
+        npm ci
+        npx vite build --mode production
+        cp -r dist/* /usr/share/nginx/html/
+        cp nginx.conf /etc/nginx/conf.d/default.conf
+        nginx -g 'daemon off;'
+    depends_on:
+      - backend
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:80/"]
+      interval: 15s
+      timeout: 5s
+      retries: 15
+      start_period: 120s
+    restart: unless-stopped
+
 volumes:
   pg_data: