[4/4] Upgrade GitLab to Amazon Linux 2023 (#6160)

Change resolve_container_path.py to work with new instance use of cgroup v2

Author: achave11-ucsc

scripts/resolve_container_path.py

@@ -20,14 +20,17 @@
 def resolve_container_path(container_path):
     container_path = os.path.realpath(container_path)
     try:
-        with open('/proc/self/cgroup') as f:
-            # Entries in /proc/self/cgroup look like this (note the nesting):
-            # 11:name=systemd:/docker/82c1bd2…23b5bcf/docker/6547bce…60ca5a7
-            prefix, container_id = next(f).strip().split(':')[2].split('/')[-2:]
+        with open('/proc/self/mountinfo') as f:
+            prefix = '/docker/containers/'
+            for line in f:
+                if prefix in line:
+                    parts = line.split(prefix)
+                    if len(parts) > 1:
+                        container_id = parts[1].split('/')[0]
     except FileNotFoundError:
         pass
     else:
-        if prefix == 'docker':
+        if prefix.startswith('/docker'):
             api = docker.client.from_env().api
             for mount in api.inspect_container(container_id)['Mounts']:
                 if container_path.startswith(mount['Destination']):