fixes to imagen

README.md

@@ -9,12 +9,7 @@ Built from [`scripts/act.sh`](./scripts/act.sh). Published to this repo’s Gite
 - **Registry:** `git.keligrubb.com`
 - **Image:** `git.keligrubb.com/actions/ubuntu`
 - **Tags:** `act-22.04`, `act-24.04`, `act-latest` (and dated tags e.g. `act-24.04-YYYYMMDD`)
-
-## When images are updated
-
-- Dependencies required for actions change
-- Changes to GitHub Actions, Act, or the container registry
-- Size or performance improvements
+- **Base image:** `buildpack-deps` ([overview](https://hub.docker.com/_/buildpack-deps), [tags](https://hub.docker.com/_/buildpack-deps/tags), [source](https://github.com/docker-library/buildpack-deps))
 
 ## Build locally
 
@@ -76,11 +71,7 @@ act -P ubuntu-latest=git.keligrubb.com/actions/ubuntu:act-24.04
 
 Or put the image in `.actrc` or your workflow’s `runs-on` image.
 
-## Customising
-
-Edit [`scripts/act.sh`](./scripts/act.sh) to add or remove packages. Keep `DISTRO=ubuntu`, `TYPE=act`, and a valid `RUNNER` user, then re-run the build steps above.
-
-## Licence
+## License
 
 Parts of this repository are from [actions/virtual-environments][actions/virtual-environments], used under the [MIT License](https://github.com/actions/virtual-environments/blob/main/LICENSE).