/home/runner/work/authgear-server/authgear-server/./.github/actions/build-image/action.yaml (Line: 25, Col: 3): Unexpected value 'steps'

System.ArgumentNullException: Value cannot be null. (Parameter 'You are using a composite action but there are no steps provided in /home/runner/work/authgear-server/authgear-server/./.github/actions/build-image/action.yaml.') at GitHub.Runner.Worker.ActionManifestManager.ConvertRuns(IExecutionContext executionContext, TemplateContext templateContext, TemplateToken inputsToken, String fileRelativePath, MappingToken outputs) at GitHub.Runner.Worker.ActionManifestManager.Load(IExecutionContext executionContext, String manifestFile)