Docker

Dockerfile Generator

Generate a multi-stage Dockerfile with layer caching, a non-root user and a healthcheck.

Runtime

Language or stack

Version

Multi-stage build

Keeps the compiler, dev dependencies and source out of the final image.

Container

Working directory

Port

Start command

Emitted in exec form, so the process becomes PID 1 and receives SIGTERM.

Run as a non-root user

Skipped automatically for a distroless base, which already does this.

User name

Add a HEALTHCHECK

Health path

Output · Dockerfile

CMD uses the exec form (a JSON array), so the process runs as PID 1 and receives SIGTERM directly. The shell form wraps it in /bin/sh, which swallows signals and breaks graceful shutdown.
The build stage's toolchain and source are not present in the final image, which reduces both size and attack surface.
Add a .dockerignore covering .git, node_modules and any local env files — otherwise COPY . . bloats the context and can leak secrets into a layer.