Add standalone managed ingress diagnostics

tools/checks/managed-ingress-drill.py

@@ -200,12 +200,24 @@ if not location.startswith("https://localhost"):
             ]
         )
     except subprocess.CalledProcessError:
-        logs = _run(["docker", "logs", container], check=False).stdout.strip()
-        if logs:
-            print(f"managed ingress logs:\n{logs}", file=sys.stderr)
+        _print_container_diagnostics(container)
         raise
 
 
+def _print_container_diagnostics(container: str) -> None:
+    state = _run(
+        ["docker", "inspect", "--format", "{{json .State}}", container],
+        check=False,
+    )
+    state_detail = (state.stdout + state.stderr).strip()
+    if state_detail:
+        print(f"managed ingress state:\n{state_detail}", file=sys.stderr)
+    logs = _run(["docker", "logs", container], check=False)
+    log_detail = (logs.stdout + logs.stderr).strip()
+    if log_detail:
+        print(f"managed ingress logs:\n{log_detail}", file=sys.stderr)
+
+
 def main() -> int:
     parser = argparse.ArgumentParser(description=__doc__)
     parser.add_argument("--caddy-image", required=True)