Dockerfile

# Build stage - compile React
FROM node:20-alpine AS build-stage

WORKDIR /app

# Copy entire project
COPY . .

# Install dependencies and build client
RUN npm install
RUN npm run build

# Production stage - run server with built client
FROM node:20-alpine

WORKDIR /app

# Copy only what we need from build stage
COPY --from=build-stage /app/server ./server
COPY --from=build-stage /app/client/dist ./client/dist
COPY --from=build-stage /app/package.json ./

# Install only production dependencies
RUN npm install --only=production && \
    npm install bcryptjs cors dotenv express express-async-handler express-mongo-sanitize express-rate-limit express-validator helmet jsonwebtoken mongoose morgan

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=40s --retries=3 \
    CMD node -e "require('http').get('http://localhost:3000/api', (r) => {if (r.statusCode !== 404) throw new Error(r.statusCode)})"

# Expose port
EXPOSE 3000

# Start server
CMD ["node", "server/server.js"]