Update Dockerfile

[xavierxmorris]

No description provided.

[github-learning-lab]

Nice work, you committed a Dockerfile. You'll notice at the end of the Dockerfile, we refer to an entrypoint script.

ENTRYPOINT ["/entrypoint.sh"]

The entrypoint.sh script will be run in Docker, and it will define what the action is really going to be doing.

Step 2: Add the action's script

An entrypoint script must exist in our repository so that Docker has something to execute.

⌨️ Activity: Add an entrypoint script and commit it to your branch

1. As a part of this branch and pull request, create a file in the ./action-a/ directory titled entrypoint.sh. You can do so with this quicklink
2. Add the following content to the entrypoint.sh file:

   #!/bin/sh -l
   
   sh -c "echo Hello world my name is $MY_NAME"

3. Stage and commit the changes
4. Push the changes to GitHub

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I'll respond when I detect a new commit on this branch.