* containers: Pull newer versions of containers
Allows topgrade to update a users containers. It will automatically skip
containers which come from the `localhost` repo as these are self-built.
Respects the version number the containers were initially checked out
with in order not to introduce semver-breaking changes.
Works with podman and docker.
* topgrade: Add 'containers' step
* containers: Ignore some errors for docker
This patch is needed to achieve compatibility between docker and podman.
In particular, docker doesn't store/tell the user from which repository
(i.e. `hub.docker.com`, or `registry.fedoraproject.org`) a container
originates. This has the side-effect, that self-built containers cannot
be distinguished from publicly available containers. Therefore this
patch introduces an exception to the error handling when pulling, by
scanning the output of the `docker pull` command. If it finds the
`registry does not exist` substring in the output, it will skip the
container but **NOT** consider the whole update step failed.
* containers: Skip '<none>' containers
that result from either intermediate products of a container build or
when images are dangling.
* steps: containers: simplify error handling
And don't return errors from within the "unknown container registry"
handling, since that would immediately terminate the whole update which
isn't intended.
* steps: toolbox: Add module to upgrade toolboxes
This adds a module to upgrade all toolboxes found on a host system.
[Toolbox][1] (More recently: `toolbx`) is a tool that easily provides
mutable, containerized command line environments. It is a means to work
and develop in a mutable environment on immutable operating systems such
as Fedora Silverblue, CoreOS, Kinoite and much more. However, it is not
limited to these use cases.
The integration into topgrade works as follows: Toolbx makes many of the
hosts folders available form inside the toolbx container by default. In
particular, all of the hosts filesystem is mapped under `/run/host`. This
module exploits this fact by:
- Gathering a list of toolboxes available on the host that runs
`topgrade`
- Executing `toolbox run` for each of these toolboxes to run a command
inside the toolboxes, **using the executing `topgrade` executable with
the `--only system` arguments**
[1]: https://containertoolbx.org/
* toolbx: Integrate toolbx into the application
* Toolbx is Linux specific
Co-authored-by: Roey Darwish Dror <roey.ghost@gmail.com>
