In a Docker container action's action.yml, what do the 'args:' field values correspond to in the Docker context?
Select an answer to reveal the explanation.
Short Explanation and Infographic
In a Docker action, 'args:' maps to what Docker calls CMD — the arguments passed to your container's ENTRYPOINT script.
Full explanation below image
![Educational infographic 1024x768 showing Docker action architecture. action.yml with 'runs: using: docker, image: Dockerfile, args: [${{ inputs.who-to-greet }}]'. Arrow to Dockerfile showing ENTRYPOINT [/entrypoint.sh]. Args flow to ENTRYPOINT as CMD override. Compare Dockerfile: FROM, RUN, COPY, ENTRYPOINT layers. Container icon with GitHub logo.](/media/github/gh-200/GH-200-q048-infographic.webp)
Full Explanation
In a Docker container action's action.yml, the 'runs.args:' field provides arguments that override the Dockerfile's CMD instruction and are passed to the ENTRYPOINT. These can reference action inputs using '${{ inputs.my-input }}'. The 'entrypoint:' field in action.yml overrides the ENTRYPOINT directive. 'args:' is not for Docker build arguments (--build-arg), not for RUN layer commands (those are in the Dockerfile), and not for environment variables (those use 'env:'). Docker actions are pulled from Docker Hub or built from a Dockerfile in the action repository.