Setting exit codes for actions

uses the exit code to set the action's check run status, which can be success or failure.

Exit status	Check run status	Description
`0`	`success`	The action completed successfully and other tasks that depend on it can begin.
Nonzero value (any integer but 0)	`failure`	Any other exit code indicates the action failed. When an action fails, all concurrent actions are canceled and future actions are skipped. The check run and check suite both get a `failure` status.

If you are creating a JavaScript action, you can use the actions toolkit @actions/core package to log a message and set a failure exit code. For example:

try {
  // something
} catch (error) {
  core.setFailed(error.message);
}

For more information, see Creating a JavaScript action.

If you are creating a Docker container action, you can set a failure exit code in your entrypoint.sh script. For example:

if <condition> ; then
  echo "Game over!"
  exit 1
fi

For more information, see Creating a Docker container action.

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