Dockerfile

# Build stage
FROM node:20-alpine AS builder

WORKDIR /app

# Copy package files
COPY package*.json ./
COPY prisma ./prisma/

# Install all dependencies (dev included for build)
RUN npm ci && npm cache clean --force

# Copy source code
COPY . .

# Generate Prisma client and build application
RUN npx prisma generate && npm run build

# Production stage
FROM node:20-alpine AS production

# Create app directory
WORKDIR /app

# Create non-root user
RUN addgroup -g 1001 -S nodejs
RUN adduser -S nestjs -u 1001

# Copy package files
COPY package*.json ./

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

# Copy built application and prisma files
COPY --from=builder --chown=nestjs:nodejs /app/dist ./dist
COPY --from=builder --chown=nestjs:nodejs /app/prisma ./prisma
COPY --from=builder --chown=nestjs:nodejs /app/node_modules/.prisma ./node_modules/.prisma

# Switch to non-root user
USER nestjs

# 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", "dist/main.js"]