I ran the most recent set of upgrades, including upgrading to the current Docker version. To get around the known problems I ran the suggested (apparmor) commands, and Docker and Portainer start normally. However, when trying to update a container I get the following error:
Failure
Get "https://registry-1.docker.io/v2/": dial tcp: lookup registry-1.docker.io on 10.28.1.1:53: read udp 10.28.1.150:36489->10.28.1.1:53: i/o timeout
Reverting to the previous version (5:20.10.23~3-0) fixes the problem, but I would be grateful if anybody can help with a more enduring fix? DNS is set to 8.8.8.8.
Thanks