Dockerfile

# Build stage
FROM node:18-alpine AS builder

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci

# Copy source code
COPY src ./src
COPY tsconfig.json ./

# Build TypeScript
RUN npm run build

# Production stage
FROM node:18-alpine

WORKDIR /app

# Install dumb-init for proper signal handling
RUN apk add --no-cache dumb-init

# Copy package files
COPY package*.json ./

# Install production dependencies only
RUN npm ci --only=production

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

# Create logs directory
RUN mkdir -p /app/logs

# Expose port
EXPOSE 3000

# Use dumb-init to run Node.js
ENTRYPOINT ["dumb-init", "--"]

# Start the application
CMD ["node", "dist/index.js"]

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
  CMD node -e "require('http').get('http://localhost:3000/api/v1/health', (r) => {if (r.statusCode !== 200) throw new Error(r.statusCode)})"