gcr-cleaner

Script used for cleaning up Google Container Registry using Cloud Build

Usage

There are 4 arguments:

• --days-to-keep - number of days for which tags should be kept
• --tags-to-keep - number of tags which are going to be kept, this takes precedence over --days-to-keep argument, so it means that even if there are tags older than X but they are smaller than value of this argument, then they will be kept anyway
• --project - google project where GCR will be cleaned
• --do-it - it actually says script to perform the cleanup, otherwise script will operate in noop mode

Running the cloudbuild

gcloud build submits --substitutions _DAYS_TO_KEEP=10,_TAGS_TO_KEEP=5 .

Required Software

You only need gcloud installed and authenticated, script is at least Python3.5+ compatible (but might also work on older 3.x versions of python)

Why not other solutions?

Currently it is hard to user raw Docker Registry API v2 to achieve same goals as this script:

• cleanup only one GCR project
• evaluate number of tags together with their age