This works by configuring the toolbox container after it has been
created, instead of before. The toolbox script itself is mentioned as
the entry point of the container, which does 'exec sleep +Inf' once the
initialization is done.
A new command 'init-container' was added to perform the initialization.
It is primarily meant to be used as the entry point for all toolbox
containers, and must be run inside the container that's to be
initialized. It is not expected to be directly invoked by humans, and
cannot be used on the host.
As a result, the default name for the toolbox containers is now
fedora-toolbox-<version-id>, not fedora-toolbox-<user>-<version-id>.
For backwards compatibility, 'toolbox enter' and 'toolbox run' will
continue to work with containers using the old naming scheme.
https://github.com/debarshiray/toolbox/pull/160
Currently, there's no easy way to get the size of the impending
download. Skopeo doesn't offer the size of the OCI image [1] and it's
debatable whether another 23 MB binary ought to be pulled in as a
dependency just for this.
Given that the default fedora-toolbox images are the only base images
available via a public repository, the size of the download is hard
coded to reflect the approximate size of the fedora-toolbox images.
These images are between 451 MB and 483 MB, so 500 MB should be a
reasonably suggestive approximate that shouldn't negatively surprise
users.
[1] https://github.com/containers/skopeo/issues/641https://github.com/debarshiray/toolbox/issues/134
