What I did:
- Install docker-ce via snap
- Remove it - errors
- Remove snap
- Remove via dpkg - worked finally
- Install official way - dpkg gives an error, post-install script of docker would exit with an error.
Debugging shows there is no dpkg log error but it is just that docker does not start; it would not find docker group.
docker.socket: Failed to resolve group docker: No such process
Adding this group helps, docker daemon starts. But then, if I add a user to this group, it does not get the permissions.
Aside further debugging, what to look for to have the system in the state before I used snap in step 1 above? (very unpleasant feeling to have a Linux system contaminated).
UPD - finally after system restarted it worked for me.
