Thank you for posting your question in GitHub Community Forum.
I checked your repo, I found that you are using v1.1 of your action now. And the latest workflow run succeeded
I checked your releases, and I found that you fixed dockerfile typo since v1.1. So use v1.1 will use the fixed dockerfile.
When you fixed something in a new release, I would suggest you to use the latest release version when using actions in your workflow yml.
Currently, you could use v1.3.