On Thu, Feb 11, 2016, at 05:08 AM, Daniel Riek wrote: > > * Enable mounting containers as volumes (unless I am mistaken, right > now we can only mount host directories as volumes? Might be wrong)
This is: https://github.com/docker/docker/issues/7115 The thing that gets really messy is, sure you can mount another container with dnf or whatever at /build/dnf, but everything that is used as part of a build needs to be effectively statically linked. Or alternatively, compute a union of files in /usr/bin. But then you have to look for *new files* that the build may have dropped in /usr/bin, while still deleting files from the union from the build. The rpm-ostree container approach to this is that builds always output rpms, except it runs as non-root, (and we can make that *much* faster than a simple aggregation of yum install + docker) but it also supports aggregating them into final images.
