Generate production-ready multi-stage Dockerfiles and .dockerignore for Node, Python, Go, Rust, Java, and Next.js.
Multi-stage builds keep the runtime image small — deps and compile steps stay in the builder stage.
FROM node:22-alpine AS deps
WORKDIR /app
COPY package.json package-lock.json* ./
RUN npm ci
FROM node:${version} AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build
FROM node:22-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/dist ./dist
EXPOSE 3000
HEALTHCHECK --interval=30s --timeout=5s --retries=3 CMD wget -qO- http://localhost:3000/ || exit 1
CMD ["node", "dist/index.js"]node_modules .next dist build target out .git .gitignore .env .env.local *.log Dockerfile .dockerignore npm-debug.log* yarn-error.log* __pycache__ *.pyc .venv .idea .vscode
docker build -t node-app . docker run -p 3000:3000 node-app
The exact Dockerfile patterns we use for high-traffic services — multi-stage, lean, and safe.
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