name: 'Hello World' description: 'Greet someone and record the time' inputs: who-to-greet: # id of input description: 'Who to greet' required: true default: 'World' outputs: time: # id of output description: 'The time we greeted you' runs: using: 'docker' image: 'Dockerfile' args: - ${{ inputs.who-to-greet }}