Document how to install Docker CE

[jlebon]

This could be desirable for various reasons, e.g. more up to date packages or for a different channel.

See https://docs.docker.com/engine/install/fedora/.

[dustymabe]

@hrismarin - would you be interested in trying this out? it would basically be something like https://docs.fedoraproject.org/en-US/fedora-coreos/os-extensions/ but with an rpm-ostree override remove moby-engine first

[hrismarin]

Will this be in the FAQ or on a separate page? I'm in favor of a separate page, so we can give the necessary instructions and example config.

[jshuffle]

@hrismarin - would you be interested in trying this out? it would basically be something like https://docs.fedoraproject.org/en-US/fedora-coreos/os-extensions/ but with an rpm-ostree override remove moby-engine first

I think it requires a slightly more extensive: rpm-ostree override remove containerd moby-engine runc

At least, that's what I've had to do, since the docker-ce repository ships a containerd.io package (which also contains /usr/bin/runc).

[dustymabe]

Will this be in the FAQ or on a separate page? I'm in favor of a separate page, so we can give the necessary instructions and example config.

@hrismarin I'm not sure, I think the proposal of a separate page could make sense. I figure the people who care where it should be put will show up when there is a PR to review.

[dustymabe]

fixed in #641