Dockerfile

# Stage 1: Install dependencies
FROM node:22-alpine AS dependencies

WORKDIR /app

COPY package*.json ./

RUN HUSKY=0 npm ci --only=production && \
    cp -R node_modules /tmp/node_modules && \
    HUSKY=0 npm ci

# Stage 2: Build application
FROM node:22-alpine AS build

WORKDIR /app

COPY package*.json ./
COPY tsconfig.json ./
COPY --from=dependencies /app/node_modules ./node_modules

COPY src ./src
COPY tests ./tests
COPY jest.config.js ./

RUN npm run build && \
    npm run test

# Stage 3: Production image
FROM node:22-alpine AS production

ENV NODE_ENV=production

RUN addgroup -g 1001 -S nodejs && \
    adduser -S nodejs -u 1001

WORKDIR /app

COPY --from=dependencies /tmp/node_modules ./node_modules
COPY --from=build /app/dist ./dist
COPY package*.json ./

RUN chown -R nodejs:nodejs /app

USER nodejs

EXPOSE 3000

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

CMD ["node", "dist/index.js"]