Dockerfile
Dockerfile examples that are good to copy-and-paste.
# syntax=docker/dockerfile:1
LABEL org.opencontainers.image.created="2025-01-01T00:00:00Z"
LABEL org.opencontainers.image.url="https://example.com"
LABEL org.opencontainers.image.source="https://github.com/example/repo"
LABEL org.opencontainers.image.version="1.0.0"
LABEL org.opencontainers.image.revision="abc123"
LABEL org.opencontainers.image.vendor="Example Corp"
LABEL org.opencontainers.image.title="Example Image"
LABEL org.opencontainers.image.description="This is an example image."
LABEL org.opencontainers.image.documentation="https://example.com/docs"
LABEL org.opencontainers.image.authors="John Doe <john.doe@example.com>"
LABEL org.opencontainers.image.licenses="MIT"
FROM _
EXPOSE 80
WORKDIR /app
...
# Start the application
# Fixed entrypoint
ENTRYPOINT ["app", "start"]
# Variable flags
CMD ["--port", "80"]
tip
If you're building docker images with GitHub Actions, docker/metadata-action (0) take care of most labels for you automatically. Except these:
authorsdocumentationtitlevendor