After upgrading to 7.0.1, some of my docker containers were completely bricked, most notably Immich. They would not start and I couldn't even see the logs, when I tried to open the logs the window would pop up and immediately close. When trying to restart the containers I received an error pop up. Unfortunately I don't remember what it said and did not save an image. I do remember it was not very informative though, no code or anything, just a generic error, nothing useful to search online for.
I tried restoring backup versions of docker containers and appdata, but that did not resolve the issue. What eventually worked was rolling back Unraid to 7.0.0, disabling docker all-together, and re-enabling it.
That indicates to me it was a problem with the 7.0.1 update, or at the least a compatibility issue with 7.0.1 and the docker containers. I could not find any reports of other people having the same issue with either 7.0.1 or the docker containers that were broken.
Given this experience, I will probably wait for the next stable release to upgrade, it doesn't seem worth it to risk breaking my docker containers again. Just wanted to drop a report here, thanks.