Adding output parameters and using job summaries

In this recipe, we’ll add an output parameter to the action that can be used in subsequent steps, and we are going to write content to the workflow job summary.

Getting ready…

You will have to finish the previous recipe to continue with this one.

How to do it…

1. Open the action.yml file and add the following code right under the inputs section but before the runs section:

   outputs:
     answer:
       description: 'The answer to everything (always 42)'

   This defines one output with an ID of answer.

2. Next, open entrypoint.sh and add the following line to the end of the file:

   echo "answer=42" >> $GITHUB_OUTPUT

   This will set the output value for answer to 42.

3. Now, add the following lines to the end of entrypoint.sh to write some Markdown and HTML to the step summary:

   echo "### Hello $@! :rocket:" >> $GITHUB_STEP_SUMMARY
   echo "<h3...