Dockerfile

# Multi-stage Dockerfile for CoreChainServer NestJS Application
FROM node:22-alpine AS builder

WORKDIR /app

COPY package*.json ./

RUN npm ci

COPY . .
RUN npm run build

RUN npm prune --production

FROM node:22-alpine AS production

WORKDIR /app

RUN apk add --no-cache dumb-init

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

COPY package*.json ./

COPY --from=builder /app/node_modules ./node_modules

COPY --from=builder /app/dist ./dist

COPY --from=builder /app/src/blockchain/build ./src/blockchain/build

RUN chown -R nestjs:nodejs /app

USER nestjs

EXPOSE 3000

HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
  CMD node -e "require('http').get('http://localhost:3000/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"

ENTRYPOINT ["dumb-init", "--"]

CMD ["node", "dist/main"]