[MESOS-9704] Support docker manifest v2s2 config GC.

• Type: Improvement
• Status: Resolved
• Priority: Blocker
• Resolution: Done
• Fix Version/s: 1.5.4, 1.6.3, 1.7.3, 1.8.0
• Component/s: containerization
• Labels: containerization
• Epic Link: docker-v2s2
• Sprint: Containerization: RI-13 Sp 44
• Story Points: 3
• Assignee: Gilbert Song
• Reporter: Gilbert Song
• Shepherd: Qian Zhang
• Created: 05/Apr/19 06:06
• Updated: 16/Apr/19 23:17
• Resolved: 16/Apr/19 19:20

Description

After docker manifest v2s2 support, layer GC is still properly supported.

However, the manifest config is not garbage collected. Need to add the config dir to the checkpointed LAYERS_FILE to support config GC.