Adds a dockerfile

[echaz]

Summary of the changes in this pull request

non-linux releases of rednotebook are a bit of a pain. So for all those of you out there who know how to both xwindows and docker, why not just run it on a linux container?

I dont know how useful this is for others, it is certainly useful for me for when I switch mac laptops and dont want to have to do a giant dance involving brew, gtk installations and lots of time.

As a side note, I believe the icon theme listed on line 20 is missing from your ubuntu apt definition. I got a bunch of warnings before I installed that.

Pull request checklist

• I have added an entry in CHANGELOG.md including my name and issue and/or pull request number.
• If applicable: I have removed the corresponding entry in TODO.md.

[jendrikseipp]

Thanks for the PR! I tried to make the steps a bit clearer. Can you double-check, please? Also, could you add more detailed instructions on the parts about Cygwin, xwindows and startx? I know nothing about these.

[echaz]

yup, I'll try to get to it this weekend. I should be able to test this out in both environments.

Also, how do we add "adwaita-icon-theme-full" to the ubuntu configuration denoted in "ppa:rednotebook/stable", so I don't need to enumerate it out in the dockerfile.

[jendrikseipp]

@kathenas What do you think about adding adwaita-icon-theme or adwaita-icon-theme-full to debian/control? I'm unsure whether one of these core GTK package should be a hard dependency.

[kathenas]

@kathenas What do you think about adding adwaita-icon-theme or adwaita-icon-theme-full to debian/control? I'm unsure whether one of these core GTK package should be a hard dependency.

On Debian/Ubuntu when libgtk-3-0 is pulled in, the packages adwaita-icon-theme and hicolor-icon-theme are also with other packages additionally depending on the Desktop Environment. Adding a hard dependency is not warranted.

[jendrikseipp]

Thanks for clarifying!

[jendrikseipp]

@echaz Do you still want to pursue this (see my earlier message #614 (review) for the next steps)?