Improve ECR public lifecycle handling via python script

ecr_public_lifecycle.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+
+import argparse
+import boto3
+
+parser = argparse.ArgumentParser(description='Implement basic public ECR lifecycle policy')
+parser.add_argument('--repo', dest='repositoryName', action='store', required=True,
+                    help='Name of the public ECR repository')
+parser.add_argument('--keep', dest='keep', action='store', default=10, type=int,
+                    help='number of tagged images to keep, default 10')
+parser.add_argument('--dev', dest='delete_dev', action='store_true',
+                    help='also delete in-development images only having tags like v0.1.1-commitNr-githash')
+
+args = parser.parse_args()
+
+client = boto3.client('ecr-public', region_name='us-east-1')
+
+images = client.describe_images(repositoryName=args.repositoryName)["imageDetails"]
+
+untagged = []
+kept = 0
+  
+# actual Image
+# imageManifestMediaType: 'application/vnd.oci.image.manifest.v1+json'
+# image Index
+# imageManifestMediaType: 'application/vnd.oci.image.index.v1+json'
+
+# Sort by date uploaded
+for image in sorted(images, key=lambda d: d['imagePushedAt'], reverse=True):
+    # Remove all untagged
+    # if registry uses image index all actual images will be untagged anyways
+    if 'imageTags' not in image:
+        untagged.append({"imageDigest": image['imageDigest']})
+        #print("Delete untagged image {}".format(image["imageDigest"]))
+        continue
+
+    # check for dev tags
+    if args.delete_dev:
+        _delete=True
+        for tag in image["imageTags"]:
+            # Look for at least one tag NOT beign a SemVer dev tag
+            if "-" not in tag:
+                _delete=False
+        if _delete:
+            print("Deleting development image {}".format(image["imageTags"]))
+            untagged.append({"imageDigest": image['imageDigest']})
+            continue
+
+    if kept < args.keep:
+        kept=kept+1
+        print("Keeping tagged image {}".format(image["imageTags"]))
+        continue
+    else:
+        print("Deleting tagged image {}".format(image["imageTags"]))
+        untagged.append({"imageDigest": image['imageDigest']})
+
+deleted_images = client.batch_delete_image(repositoryName=args.repositoryName, imageIds=untagged)
+
+if deleted_images["imageIds"]:
+    print("Deleted images: {}".format(deleted_images["imageIds"]))

podman.mk

@@ -65,10 +65,9 @@ ecr-login: ## log into AWS ECR public
 
 clean: rm-test-image rm-image ## delete local built container and test images
 
-rm-remote-untagged: ## delete all remote untagged images
+rm-remote-untagged: ## delete all remote untagged and in-dev images, keep 10 tagged
-	echo "Removing all untagged images from $(IMAGE) in $(REGION)"
+	echo "Removing all untagged and in-dev images from $(IMAGE) in $(REGION)"
-	IMAGE_IDS=$$(for image in $$(aws ecr-public describe-images --repository-name $(IMAGE) --region $(REGION) --output json | jq -r '.imageDetails[] | select(.imageTags | not ).imageDigest'); do echo -n "imageDigest=$$image "; done) ; \
+	.ci/ecr_public_lifecycle.py --repo $(IMAGE) --dev
-		[ -n "$$IMAGE_IDS" ] && aws ecr-public batch-delete-image --repository-name $(IMAGE) --region $(REGION) --image-ids $$IMAGE_IDS | jq -r '.imageIds[]' || echo "No image to remove"
 
 rm-image:
 	test -z "$$(podman image ls -q $(IMAGE):$(TAG)-$(_ARCH))" || podman image rm -f $(IMAGE):$(TAG)-$(_ARCH) > /dev/null