buildx failed with: ERROR: failed to solve: failed to push saltstack/salt-ci-containers/python: failed to authorize: failed to fetch oauth token: unexpected status from GET request to https://auth.docker.io/token?scope=repository%3Alibrary%2Fpython%3Apull&scope=repository%3Asaltstack%2Fsalt-ci-containers%2Fpython%3Apull%2Cpush&service=registry.docker.io: 401 Unauthorized

3.8 is not a valid semver. More info: https://semver.org/

No Docker image version has been generated. Check tags input.