I use the PIM Docker image for development , and I'd like to inspect the UI in non-English languages — in particular, Akonadi's Calendar Properties dialogs. Is there some way to add languages to the environment?
System Settings, Regional Settings > Language says “There are no additional languages available on this system”, and only offers American English. Setting LANG on the command line translates some items — some button labels, month names ... — but not menus and such.
