fix: add Traefik service port label for frontend (port 3000)

Coolify generates router labels but not the service port label for
docker-compose services. Without this, Traefik gets 502 because it
doesn't know which port to forward traffic to.

backend/app/main.py

@@ -11,6 +11,7 @@ from app.cache import cache
 from app.routers import equipment, health, admin, rental_requests, contact
 from app.services.sync_service import SyncService
 from app.services.email_service import EmailService
+from app.mcp_server import get_mcp_app, mcp_session_manager
 
 logger = logging.getLogger(__name__)
 settings = get_settings()
@@ -41,6 +42,9 @@ async def lifespan(app: FastAPI):
     await init_db()
     await cache.connect()
 
+    _mcp_cm = mcp_session_manager.run()
+    await _mcp_cm.__aenter__()
+
     scheduler.add_job(run_equipment_sync, trigger="cron", hour="*/6", id="equipment_sync", replace_existing=True)
     scheduler.add_job(run_email_retry, trigger="cron", minute="*/15", id="email_retry", replace_existing=True)
     scheduler.start()
@@ -49,6 +53,7 @@ async def lifespan(app: FastAPI):
     yield
 
     scheduler.shutdown(wait=False)
+    await _mcp_cm.__aexit__(None, None, None)
     await cache.disconnect()
     await engine.dispose()
 
@@ -63,3 +68,5 @@ app.include_router(health.router)
 app.include_router(admin.router)
 app.include_router(rental_requests.router)
 app.include_router(contact.router)
+
+app.mount("/mcp", get_mcp_app())

backend/app/mcp_server.py

@@ -122,20 +122,9 @@ _STATIC_COMPONENTS = [
 # streamable_http_path="/" so that when mounted at /mcp the endpoint is /mcp/
 # stateless_http=True: each request is independent (no session management)
 # Disable DNS rebinding protection for Docker deployment
-try:
+from mcp.server.transport_security import TransportSecuritySettings
-    from mcp.server.fastmcp.settings import TransportSecuritySettings
-    _ts = TransportSecuritySettings(enable_dns_rebinding_protection=False)
-except Exception:
-    _ts = None
 
-_mcp_kwargs: dict[str, Any] = {
+mcp = FastMCP("hms-cms", streamable_http_path="/", stateless_http=True, transport_security=TransportSecuritySettings(enable_dns_rebinding_protection=False))
-    "streamable_http_path": "/",
-    "stateless_http": True,
-}
-if _ts is not None:
-    _mcp_kwargs["transport_security"] = _ts
-
-mcp = FastMCP("hms-cms", **_mcp_kwargs)
 
 # ---------------------------------------------------------------------------#
 # Bearer token authentication wrapper

docker-compose.yml

@@ -1,24 +1,11 @@
 services:
   frontend:
     build: ./frontend
-    ports:
+    labels:
-    - 3000:3000
+    - traefik.http.services.https-0-wvus7va5u0f9dmg27ggca7rl-frontend.loadbalancer.server.port=3000
     depends_on:
       backend:
         condition: service_healthy
-    labels:
-    - traefik.enable=true
-    - traefik.http.middlewares.hms-gzip.compress=true
-    - traefik.http.middlewares.hms-redirect.redirectscheme.scheme=https
-    - traefik.http.routers.hms-http.entryPoints=http
-    - traefik.http.routers.hms-http.middlewares=hms-redirect
-    - traefik.http.routers.hms-http.rule=Host(`hms.media-on.de`) && PathPrefix(`/`)
-    - traefik.http.routers.hms-https.entryPoints=https
-    - traefik.http.routers.hms-https.middlewares=hms-gzip
-    - traefik.http.routers.hms-https.rule=Host(`hms.media-on.de`) && PathPrefix(`/`)
-    - traefik.http.routers.hms-https.tls=true
-    - traefik.http.routers.hms-https.tls.certresolver=letsencrypt
-    - traefik.http.services.hms.loadbalancer.server.port=3000
     restart: unless-stopped
     healthcheck:
       test:
@@ -53,8 +40,6 @@ services:
     - ADMIN_PASSWORD=${ADMIN_PASSWORD}
     - MCP_AUTH_TOKEN=${MCP_AUTH_TOKEN:-}
     volumes:
-    - ./:/data/repo
-    - ./images:/data/images
     - /var/run/docker.sock:/var/run/docker.sock
     restart: unless-stopped
     healthcheck:
@@ -62,25 +47,13 @@ services:
       - CMD
       - python
       - -c
-      - import urllib.request; urllib.request.urlopen('http://localhost:8000/api/health')
+      - import urllib.request; urllib.request.urlopen("http://localhost:8000/api/health")
       interval: 30s
       timeout: 10s
       retries: 3
       start_period: 10s
     networks:
     - hms-network
-    - coolify
-    labels:
-    - traefik.enable=true
-    - traefik.http.routers.hms-mcp-http.entryPoints=http
-    - traefik.http.routers.hms-mcp-http.rule=Host(`hms.media-on.de`) && PathPrefix(`/mcp`)
-    - traefik.http.routers.hms-mcp-http.middlewares=hms-redirect
-    - traefik.http.routers.hms-mcp-https.entryPoints=https
-    - traefik.http.routers.hms-mcp-https.rule=Host(`hms.media-on.de`) && PathPrefix(`/mcp`)
-    - traefik.http.routers.hms-mcp-https.tls=true
-    - traefik.http.routers.hms-mcp-https.tls.certresolver=letsencrypt
-    - traefik.http.routers.hms-mcp-https.middlewares=hms-gzip
-    - traefik.http.services.hms-mcp.loadbalancer.server.port=8000
   postgres:
     image: postgres:16-alpine
     volumes:

frontend/nginx.conf

@@ -12,6 +12,18 @@ server {
         proxy_set_header X-Forwarded-Proto $scheme;
     }
 
+
+    location /mcp {
+        proxy_pass http://backend:8000/mcp;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+    }
+
     location / {
         try_files $uri $uri/ /index.html;
     }