[INFRA-1152] Fix release workflows on 3.9.x #55

	name: CI On Pull Request Closure
	on:
	pull_request:
	types: [closed]

	env:
	AWS_REGION: us-east-1

	permissions:
	id-token: write # This is required for requesting the JWT
	contents: read # This is required for actions/checkout

	jobs:
	aws-ecr:
	# Skip any PR created by dependabot to avoid permission issues
	if: (github.actor != 'dependabot[bot]')
	name: Delete PR Docker Images
	runs-on: ubuntu-24.04
	steps:
	- name: Configure AWS credentials
	uses: aws-actions/configure-aws-credentials@8c3f20df09ac63af7b3ae3d7c91f105f857d8497 #v3.0.1
	with:
	role-to-assume: ${{ secrets.AWS_ASSUME_ROLE_SESSION_TOKEN }}
	aws-region: ${{ env.AWS_REGION }}

	- name: Login to Amazon ECR
	id: login-ecr
	uses: aws-actions/amazon-ecr-login@2fc7aceee09e9e4a7105c0d060c656fad0b4f63d #v1.6
	with:
	mask-password: "true"

	- name: Remove docker images from all ECR repositories
	run: \|
	REPO_NAMES=("rasa-sdk-dev")
	SEARCH_STRING="pr${{ github.event.number }}"
	# Iterate through each repository
	for REPO_NAME in "${REPO_NAMES[@]}"
	do
	# List all image tags in the repository that match the search string
	# Escape empty strings and null character
	IMAGES=$(aws ecr list-images --repository-name $REPO_NAME --query "imageIds[?imageTag!=null&&imageTag!=''&&contains(imageTag, '$SEARCH_STRING')].imageTag" --output text)

	# Print the image tags
	echo "Images to be deleted in repository $REPO_NAME:"
	echo "$IMAGES"
	# Delete each image by its tag
	for IMAGE in $IMAGES
	do
	aws ecr batch-delete-image --repository-name $REPO_NAME --image-ids imageTag=$IMAGE
	done
	done

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