Dockerアップデート後にダウン

[omarfilip]

まず、コンソールからアップグレードを試みてください：

Docker Manager: FAILED TO UPGRADE

This is probably related to the docker manager changes that try to keep the site running more during the upgrade, which would have increased the during-upgrade RAM requirements. Container rebuild will always work because it takes down the site temporarily, so it gets maximum RAM.