github.event name

github.event_name

     - name: Set PR tag
        if: ${{ github.event_name == '[[pull_request]]' }}
        run: echo "TAG=pull-request-${{ github.event.number }}" >> $GITHUB_ENV

See also

• GitHub Actions, act, .github/workflows/, ~/actions-runner/, svc.sh, deploy:, run:, runs-on:, uses:, steps:, jobs:, on:, env:, uses:, script:, continue-on-error:, template:, aws-actions, inputs:, GITHUB_ENV, needs:, github., GitHub runner, my-docker-publish.yml, GitHub Actions variables, GitHub Actions contexts, GitHub Actions Importer, If:, SLSA, Actions Runner Controller (ARC), $GITHUB OUTPUT, notify:, Marketplace, GITHUB_TOKEN