Reverting docker-cli and supervisor immediately self updated, unhealthy state gone again and HA updates. Transcript of session:
david@debian:~$ sudo apt install docker-ce-cli=5:20.10.3~3-0~debian-buster
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be DOWNGRADED:
docker-ce-cli
0 upgraded, 0 newly installed, 1 downgraded, 0 to remove and 0 not upgraded.
Need to get 41.4 MB of archives.
After this operation, 3,072 B disk space will be freed.
Do you want to continue? [Y/n] Y
Get:1 https://download.docker.com/linux/debian buster/stable amd64 docker-ce-cli amd64 5:20.10.3~3-0~debian-buster [41.4 MB]
Fetched 41.4 MB in 12s (3,523 kB/s)
dpkg: warning: downgrading docker-ce-cli from 5:20.10.4~3-0~debian-buster to 5:20.10.3~3-0~debian-buster
(Reading database ... 91925 files and directories currently installed.)
Preparing to unpack .../docker-ce-cli_5%3a20.10.3~3-0~debian-buster_amd64.deb ...
Unpacking docker-ce-cli (5:20.10.3~3-0~debian-buster) over (5:20.10.4~3-0~debian-buster) ...
Setting up docker-ce-cli (5:20.10.3~3-0~debian-buster) ...
Processing triggers for man-db (2.8.5-2) ...
Scanning processes...
Scanning candidates...
Scanning linux images...
Running kernel seems to be up-to-date.
Failed to check for processor microcode upgrades.
Restarting services...
systemctl restart hassio-supervisor.service
No containers need to be restarted.
User sessions running outdated binaries:
david @ user manager service: systemd[22601]
david@debian:~$ sudo apt-mark hold docker-ce-cli
docker-ce-cli set on hold.