Dockerfile

# Multi-stage build for optimized production image
FROM node:18-alpine AS builder

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

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

# Copy source code
COPY . .

RUN rm -f src/swagger-output.json

# Debug and Generate Swagger documentation
RUN npm run swagger:build || echo "Swagger generation failed, continuing without it"

# Build the application
RUN npm run prebuild && npm run build

# Copy swagger to build directory
RUN cp src/swagger-output.json build/swagger-output.json

# Production stage
FROM node:18-alpine AS production

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

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

# Copy built application from builder stage (including swagger file)
COPY --from=builder /app/build ./build

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

# Change ownership of the app directory
RUN chown -R nodejs:nodejs /app

# Switch to non-root user
USER nodejs

# Expose port (Render uses PORT env variable)
EXPOSE $PORT

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node -e "require('http').get('http://localhost:' + (process.env.PORT || 5000) + '/health', (res) => { process.exit(res.statusCode === 200 ? 0 : 1) })"

# Start the application
CMD ["npm", "start"]