Since `cirros.tar.gz` only existed to test `docker import`'s display and
presence in `docker events`, we can instead just use `docker export`
piped directly to `docker import` to achieve the same goal without
another external dependency besides `busybox` (which we already have).
While I was at it, I updated `TestImportDisplay` to also test that the
imported image actually runs successfully as well (so we're testing the
full import round-trip).
Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>
Upstream-commit: c7bec92891180ccffd1536839ba3bcc85d9c96a4
Component: engine
26c37e453e