cmd-push-container-manifest: add support for multiple --tag arguments

In the RHCOS pipeline, we want to be able to tag the same image using
both the stream name and the build ID.

src/cmd-push-container-manifest

@@ -22,7 +22,7 @@ def main():
     if args.images:
         # User provided images directly
         create_and_push_container_manifest(
-            args.repo, args.tag, args.images, args.v2s2, None)
+            args.repo, args.tags, args.images, args.v2s2, None)
     else:
         # Picking up images from artifacts in meta.json
         builds = Builds()
@@ -62,7 +62,7 @@ def main():
         # Create/Upload the manifest list to the container registry
         with tempfile.NamedTemporaryFile() as digestfile:
             create_and_push_container_manifest(
-                args.repo, args.tag, images, args.v2s2, digestfile.name)
+                args.repo, args.tags, images, args.v2s2, digestfile.name)
             digestfile.seek(0)
             digest = digestfile.read().decode('utf-8').strip()
 
@@ -95,7 +95,8 @@ Examples:
         --repo quay.io/dustymabe/fedora-coreos --tag stable --artifact=ostree \\
         --metajsonname=base-oscontainer --build=latest --arch=x86_64 --arch=aarch64""")
     parser.add_argument("--repo", required=True, help="The registry repo to target for the manifest")
-    parser.add_argument("--tag", required=True, help="The tag of the manifest to use")
+    parser.add_argument("--tag", required=True, dest='tags', action='append',
+                        help="The tag of the manifest to use")
     parser.add_argument("--authfile", help="A file to use for registry auth")
     parser.add_argument('--v2s2', action='store_true',
                         help='Use old image manifest version 2 schema 2 format')

src/cosalib/container_manifest.py

@@ -25,35 +25,36 @@ def delete_local_container_manifest(repo, tag):
     runcmd(cmd)
 
 
-def push_container_manifest(repo, tag, digestfile, v2s2=False):
+def push_container_manifest(repo, tags, digestfile, v2s2=False):
     '''
     Push manifest to registry
     @param repo str registry repository
-    @param tag str manifest tag
+    @param tags list of tags to push
     @param digestfile str write container digest to file
     @param v2s2 boolean use to force v2s2 format
     '''
-    cmd = ["podman", "manifest", "push",
-           "--all", f"{repo}:{tag}", f"{repo}:{tag}"]
+    base_cmd = ["podman", "manifest", "push", "--all", f"{repo}:{tags[0]}"]
     if v2s2:
         # `--remove-signatures -f v2s2` is a workaround for when you try
         # to create a manifest with 2 different mediaType. It seems to be
         # a Quay issue.
-        cmd.extend(["--remove-signatures", "-f", "v2s2"])
+        base_cmd.extend(["--remove-signatures", "-f", "v2s2"])
     if digestfile:
-        cmd.extend([f"--digestfile={digestfile}"])
-    runcmd(cmd)
+        base_cmd.extend([f"--digestfile={digestfile}"])
+    runcmd(base_cmd + [f"{repo}:{tags[0]}"])
+    for tag in tags[1:]:
+        runcmd(base_cmd + [f"{repo}:{tag}"])
 
 
-def create_and_push_container_manifest(repo, tag, images, v2s2, digestfile):
+def create_and_push_container_manifest(repo, tags, images, v2s2, digestfile):
     '''
     Do it all! Create, Push, Cleanup
     @param repo str registry repository
-    @param tag str manifest tag
+    @param tags list of tags
     @param images list of image specifications (including transport)
     @param v2s2 boolean use to force v2s2 format
     @param digestfile str write container digest to file
     '''
-    create_local_container_manifest(repo, tag, images)
-    push_container_manifest(repo, tag, digestfile, v2s2)
-    delete_local_container_manifest(repo, tag)
+    create_local_container_manifest(repo, tags[0], images)
+    push_container_manifest(repo, tags, digestfile, v2s2)
+    delete_local_container_manifest(repo, tags[0])