Better verify_rootfs.py

scripts/verify_rootfs.py

@@ -5,9 +5,15 @@ import sys
 if __name__ == "__main__":
     rootfs, = sys.argv[1:]
 
+    valid = True
     for file in ["group", "passwd"]:
+        original = f"{rootfs}/etc/{file}"
+
+        with open(original) as f:
+            original_contents = f.read()
+
         cmd = [
-            "diff", "-u", f"{rootfs}/etc/{file}",
+            "diff", "-u", original,
             f"{rootfs}/usr/lib/python3/dist-packages/middlewared/assets/account/builtin/linux/{file}"
         ]
         run = subprocess.run(cmd, stdout=subprocess.PIPE, encoding="utf-8", errors="ignore")
@@ -16,5 +22,8 @@ if __name__ == "__main__":
 
         diff = "\n".join(run.stdout.split("\n")[3:])
         if any(line.startswith("-") for line in diff.split("\n")):
-            sys.stderr.write(f"Invalid {file!r} assest:\n{diff}")
-            sys.exit(1)
+            sys.stderr.write(f"Invalid {file!r} assest:\n{diff}\nThis is how it should be:\n{original_contents}")
+            valid = False
+
+    if not valid:
+        sys.exit(1)