A tool to inspect and clean gitlab's docker registry.

Using pip:

$ pip install plunger

First export some env var to avoid reapeating command line arguments:

$ export PLUNGER_REGISTRY=https://your.gitlab.registry/
$ export PLUNGER_KEY_FILE=/path/to/your/key

Inspect the registry:

$ # show size used by images, grouped by gitlab group
$ plunger --list 1

$ # show sizes only for a group
$ plunger --list 2 --filter repository/

$ # show sizes of all tags
$ plunger --list 0 --filter repository/path/

Remove some images:

$ # keep 4 latest tags for each repos
$ plunger --keep 4

$ # keep 2 latest tags for repos starting with 'repository/'
$ plunger --keep 2 --filter repository/

$ # remove all tags for repos starting with 'repository/path/'
$ plunger --keep 0 --filter repository/path/