generate: generate: Add a identifying header to generated scripts

Add a header stating that the script was generated, which version
generated it and where to send bug reports.

Signed-off-by: Enno Tensing <tenno@suij.in>

generate/generate.py

@@ -14,6 +14,14 @@ from pathlib import Path
 from container import ConfigError, Container
 from log import Log
 
+GENERATE_VERSION = "0.0.2"
+HEADER = f"""#!/bin/sh
+# This script was generated by containerctl v{GENERATE_VERSION}
+# Report bugs with _this script_ to <tenno+containerctl@suij.in>
+
+
+"""
+
 
 def load_container_config(file: Path, log: Log) -> dict | None:
     """Load a container config."""
@@ -107,7 +115,7 @@ def main() -> None:
         if script_content == "":
             script_content = "true"
         with s.open("w+", encoding="utf-8") as f:
-            f.write("#!/bin/sh\n")
+            f.write(HEADER)
             f.write(script_content)
         s.chmod(
             stat.S_IRWXU