Dockerfile

# Use Node.js LTS version as base image
FROM node:20-alpine AS builder

# Set working directory
WORKDIR /app

# Copy package files
COPY package.json yarn.lock* ./

# Install all dependencies (including dev dependencies)
RUN yarn install --frozen-lockfile

# Copy source code
COPY . .

# Build TypeScript
RUN yarn build

# Production stage
FROM node:20-alpine AS production

# Set working directory
WORKDIR /app

# Copy package files
COPY package.json yarn.lock* ./

# Install production dependencies only
RUN yarn install --frozen-lockfile --production && \
    yarn cache clean

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

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

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

# Switch to non-root user
USER nodejs

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node -e "require('http').get('http://localhost:8000/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"

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