As this run inside of a Docker container, Docker itself isn't available for building docker images for Lambda functions.
Ideally this container should be updated to have docker installed and the volume mapping to the master docker service, or at least a note decsribing the limitation or workaround on the main README.md file.
I found the answer is to just npm install -g serverless and ignore this Github Action for now. Run those commands yourself. Once this action provides support for the docker commands we could use it 😢
As this run inside of a Docker container, Docker itself isn't available for building docker images for Lambda functions.
Ideally this container should be updated to have docker installed and the volume mapping to the master docker service, or at least a note decsribing the limitation or workaround on the main README.md file.