(maint) Docker builder prune containers …
(maint) Docker builder prune containers …

 - Hopefully will address frequent out-of-storage issues we're running
   into like:

   docker: Error response from daemon: devmapper: Thin Pool has 161137 free data blocks which is less than minimum required 163840 free data blocks. Create more free space in thin pool or use dm.min_free_space option to change behavior.

puppetlabs/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb