Containers should share their pacman cache

[fleaz]

Idea:

• User triggers "update repo"
• Create /foo/bar folder on host (tempdir)
• Mount /foo/bar inside the container as /var/cache/pacman/pkg
• Update all available packages in the packages.json
• Remove /foo/bar after update is done

This way all container can share a common pkg cache for pacman which will save some time and bandwidth for the cost of some storage space.

[mweinelt]

Related:

    warning: no /var/cache/pacman/pkg/ cache exists, creating...