Dockerfile

# Multi-stage build for production optimization
FROM node:24-alpine AS builder

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install all dependencies (including dev dependencies for building)
RUN npm ci

# Copy source code
COPY src/ ./src/

# Create production build
RUN mkdir -p dist && cp -r src/* dist/

# Production stage
FROM node:24-alpine AS production

# Create app directory
WORKDIR /app

# Create non-root user for security
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nodeapp -u 1001

# Copy package files
COPY package*.json ./

# Install only production dependencies
RUN npm ci --omit=dev && npm cache clean --force

# Copy built application from builder stage
COPY --from=builder /app/dist ./src/

# Change ownership to non-root user
RUN chown -R nodeapp:nodejs /app
USER nodeapp

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD node -e "require('http').get('http://localhost:3000/health', (res) => { process.exit(res.statusCode === 200 ? 0 : 1) })"

# Start the application
CMD ["node", "src/app.js"]