Dockerfile Generator

Generate production-ready Dockerfiles with best practices.

Language / Runtime

Version

Base Image

Application Name

Exposed Port

Entrypoint Command

Multi-stage build

Run as non-root user

Add healthcheck

Add OCI labels

Use BuildKit cache mounts

# Select options and click Generate

# .dockerignore content

# Build commands

Dockerfile Best Practices

Separate build dependencies from runtime. Reduces final image size significantly by only including what's needed to run the application.

Running as root inside a container is a security risk. Create and use a dedicated user with minimal permissions.

Order instructions from least to most frequently changing. Copy dependency files before source code to leverage Docker's layer cache.

Define HEALTHCHECK to let Docker and orchestrators know when the container is ready and healthy.

Type	Size	Best For
Alpine	~5 MB	Minimal footprint, musl libc compatible apps
Slim	~80 MB	Balance of size and compatibility
Debian	~120 MB	Full tooling, maximum compatibility
Distroless	~20 MB	Security-focused, no shell access