Clean up feature branch #25

	name: Clean up feature branch

	on:
	delete:
	branches:
	- feature/*

	env:
	IMAGE_NAME: ds-wagtail

	jobs:
	delete:
	if: github.event.ref_type == 'branch'
	runs-on: ubuntu-latest
	steps:
	- name: Clean up
	run: \|
	IMAGE_ID=$IMAGE_NAME
	# Change all uppercase to lowercase
	IMAGE_ID=$(echo $IMAGE_ID \| tr '[A-Z]' '[a-z]')
	# Strip git ref prefix from version
	VERSION=$(echo "${{ github.ref }}" \| sed -e 's,./$.$,\1,')
	# Strip "v" prefix from tag name
	[[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION \| sed -e 's/^v//')
	# Use Docker `latest` tag convention
	[ "$VERSION" == "main" ] && VERSION=latest
	echo IMAGE_ID=$IMAGE_ID
	echo VERSION=$VERSION
	echo "IMAGE_ID=$IMAGE_ID" >> $GITHUB_ENV
	echo "VERSION=$VERSION" >> $GITHUB_ENV
	echo "Clean up Docker image $IMAGE_ID:$VERSION"
	- name: Delete image
	uses: bots-house/[email protected]
	with:
	owner: nationalarchives
	name: ${{ env.IMAGE_ID }}
	token: ${{ secrets.GITHUB_TOKEN }}
	tag: ${{ env.VERSION }}

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