Dockerfile Generator
Generate a multi-stage production Dockerfile for Node.js, Next.js, PHP-FPM (Laravel), Python with uv, Go or a static site, running as a non-root user.
Free · No sign-up · Your inputs stay in your browser
Input
Generate a production Dockerfile
Output
Dockerfile
333 characters
.dockerignore (minimum)
node_modules .git .env *.log vendor .next dist __pycache__ .venv
Multi-stage: build tools stay in the first stage and only the runtime ships. Dependency manifests are copied before the source so a code change does not reinstall every package, and the cache mounts need BuildKit, which docker build uses by default since Docker 23.
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About this tool
Method, assumptions, practical next steps, and limits.
Why multi-stage
Compilers, dev dependencies and build caches stay in the first stage; only the runtime and the built application ship. A Go service ends up as one binary on a distroless base of a few megabytes, and a Next.js app ships its standalone output instead of all of node_modules. The Docker build best practices page explains the layer ordering.
Cache mounts
RUN --mount=type=cache keeps npm, Composer, uv and Go caches between builds without baking them into a layer. It needs BuildKit, the default builder since Docker Engine 23. Pin base images to a version, and to a digest for reproducible builds.