feat(Dockerfile): add root multi-stage Dockerfile for Dokploy

- Stage 1 (node:20): builds Vue.js frontend to /app/dist
- Stage 2 (python:3.12): FastAPI serves API + static files
- main.py: serve Vue.js dist via StaticFiles if /app/dist exists
- Removes GET / route (replaced by frontend index.html)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,16 @@
+FROM node:20-alpine AS frontend-builder
+WORKDIR /app/frontend
+COPY frontend/package*.json ./
+RUN npm ci
+COPY frontend/ ./
+RUN npm run build
+
+FROM python:3.12-slim
+WORKDIR /app
+COPY backend/requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+COPY backend/ .
+COPY --from=frontend-builder /app/frontend/dist /app/dist
+RUN mkdir -p uploads
+EXPOSE 8000
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

backend/app/main.py

@@ -1,6 +1,9 @@
 """FastAPI application entry point."""
+import os
+
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.staticfiles import StaticFiles
 
 from app.api.attachments import router as attachments_router
 from app.api.audit_log import router as audit_log_router
@@ -64,13 +67,13 @@ app.include_router(organizations_admin_router, prefix="/api")
 app.include_router(public_router, prefix="/api")
 
 
-@app.get("/")
-def root() -> dict[str, str]:
-    """Root endpoint."""
-    return {"message": "Space Booking API"}
-
-
 @app.get("/health")
 def health() -> dict[str, str]:
     """Health check endpoint."""
     return {"status": "ok"}
+
+
+# Serve Vue.js frontend in production (when /app/dist exists)
+_dist_dir = os.path.join(os.path.dirname(__file__), "..", "..", "dist")
+if os.path.isdir(_dist_dir):
+    app.mount("/", StaticFiles(directory=_dist_dir, html=True), name="static")