# chat/Dockerfile
# Stage 1: build frontend
FROM node:20-alpine AS build

WORKDIR /app

# copy frontend
COPY chat-frontend/ ./chat-frontend/

WORKDIR /app/chat-frontend
RUN npm install
RUN npm run build

# Stage 2: backend + serve frontend
FROM node:20-alpine

WORKDIR /app

# Copy built frontend
COPY --from=build /app/chat-frontend/dist ./frontend

# Copy backend
COPY chat-backend/package*.json ./chat-backend/
COPY chat-backend/server.js ./chat-backend/

WORKDIR /app/chat-backend
RUN npm install

# Expose backend WebSocket port and static frontend
EXPOSE 3000

# Start both backend and frontend
# Using simple Node backend and serve frontend via a tiny static server
RUN npm install -g serve

CMD ["node", "server.js"]