Test commit check changes #1

	name: verify-all-commits-are-already-in-master

	on:
	pull_request:
	branches: [ "customdc_stable" ]

	jobs:
	verify_all_commits_are_already_in_master:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	# Fetch all history for accurate comparison
	fetch-depth: 0
	# Check out the PR branch
	ref: ${{ github.event.pull_request.head.ref }}
	repository: ${{ github.event.pull_request.head.repo.full_name }}

	- name: Verify that all commits are already in the master branch
	run: \|
	git remote add dc https://github.com/datacommonsorg/website.git
	git fetch dc
	MASTER_BRANCH="dc/master"

	# Get the list of commits in the source branch that are not in the master branch
	MISSING_COMMITS=$(git log --pretty="%H - %s" $MASTER_BRANCH..HEAD --)

	if [[ -n "$MISSING_COMMITS" ]]; then
	echo ""
	echo "ERROR: The following commits are not present in $MASTER_BRANCH:"
	echo ""
	echo "$MISSING_COMMITS"
	echo ""
	echo "PRs to release branches should only contain commits that are already in master."
	echo "To fix this PR, reset your branch locally to a commit at or behind https://github.com/datacommonsorg/website/commits/master/ and run `git push --force -u origin`."
	echo "Note that a release branch PR should be based on master and not the previous version of the release branch, which contains merge commits."
	exit 1
	fi

	echo "All commits are present in $MASTER_BRANCH"

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