Fix: remove image:, single container with StaticFiles

backend/main.py

@@ -22,6 +22,15 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
+
+# --- Static Files (Frontend) ---
+from fastapi.staticfiles import StaticFiles
+import os
+
+FRONTEND_DIR = os.path.join(os.path.dirname(__file__), "frontend")
+if os.path.isdir(FRONTEND_DIR):
+    app.mount("/", StaticFiles(directory=FRONTEND_DIR, html=True), name="frontend")
+
 # --- Security ---
 SECRET_KEY = os.environ.get("JWT_SECRET", "wochenplaner-jwt-secret-2024")
 ALGORITHM = "HS256"
@@ -337,5 +346,5 @@ def health():
 # === STARTUP ===
 if __name__ == "__main__":
     import uvicorn
-    port = int(os.environ.get("PORT", 8000))
+    port = int(os.environ.get("PORT", 80))
     uvicorn.run(app, host="0.0.0.0", port=port)