message: change datetime format
diff: @@ -9,7 +9,7 @@ jobs:
  datetime: ${{ steps.get-datetime.outputs.datetime }}
  steps:
  - id: get-datetime
  - run: echo "::set-output name=datetime::$(date +'%Y-%m-%d %H:%M:%S')"
  + run: echo "::set-output name=datetime::$(date +'%Y%m%d%H%M%S')"
  build:
  needs: [ configure ]
  