Install snaps in Dockerfile

[Dark Dragon]

snappy has too many dependencies which prevent installation in a Dockerfile. With more and more applications migrating to snaps, this problem becomes more severe.

Please reduce dependencies from the installer to allow installation from within Dockerfile!

[Dark Dragon (darkdragon-001)]

I just noticed that many server applications are delivered using snaps nowadays as well [1]. If you want to continue see widespread adoption of Ubuntu in docker containers, this issue should definitely addressed!

[1] subiquity installer screenshot: https://www.virtualizationhowto.com/wp-content/uploads/2018/09/Selecting-popular-SNAPS-to-install-during-Ubuntu-Server-18.04-Installation-and-Configuration.png

[Dark Dragon (darkdragon-001)]

It would be really nice to remove dependency on systemd init system!

[Zygmunt Krynicki (zyga)]

If I understand correctly you'd like to use snapd or specific snaps inside docker. Sadly this is not supported and not something we can improve. Docker is an application container and not a system container. Snapd is designed as a system package manager. It expect to interact with system level services, like systemd.

I'm marking this as won't fix because it's simply not something we are aiming to provide.