Phase > <@gitter_niuziyuanpy:matrix.org> [graphdriver] prior storage driver overlay2 failed: driver not supported
If I remember correctly, I got this after an upgrade of docker. Luckily, thx to the upgrade, they were no container needed on the machine. Thus, I moved the content of /var/lib/docker to somewhere else. A reboot of the docker daemon later, the daemon started correctly. Be careful, it had lost all its images.
HaleyOnly way to cope with that, is:
Haley1. Before the upgrade of the OS/Docker version, save all layers/images you need as tar files using the save command.
Haley2. upgrade the OS, but remove docker
Haley3. delete /var/lib/docker
Haley4. install docker again (new version). make sure it runs.
Haley5. Import the saved images