Implement real, working microservices architecture

backend/services/messaging/Dockerfile

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+# Messaging Service Dockerfile
+FROM backend/base:latest
+
+# Copy service-specific files
+COPY backend/routes/messaging.py /app/backend/routes/messaging.py
+COPY backend/websocket /app/backend/websocket/
+COPY backend/services/messaging/main.py /app/backend/services/messaging/main.py
+
+# Set service name for entrypoint
+ENV SERVICE_NAME=messaging
+
+EXPOSE 8301

backend/services/messaging/main.py

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+from fastapi import FastAPI
+from backend.routes.messaging import router as messaging_router
+
+if __name__ == "__main__":
+    app = FastAPI(title="Messaging Service")
+    app.include_router(messaging_router, prefix="/messaging")
+
+    import os, uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=int(os.getenv("PORT", 8301)))