Using KDE-PIM docker container

[David Jarvie]

Does the KDE PIM docker container setup described in 
https://community.kde.org/KDE_PIM/Docker still work? The version of frameworks 
which is installed in it is 5.50, which is too old for Applications 19.04. 
When I try to build frameworks in this container, there are errors due to the 
Ubuntu version (xenial) used being too old. Frameworks (kwallet) now requires 
libgpgmepp-dev, but this only became available in Ubuntu bionic.

Perhaps /etc/apt/sources.list is out of date - it is is set up for a xenial 
system. Not sure what the latest Neon uses, or how to update to that while 
using the KDE PIM docker setup.

-- 
David Jarvie.
KDE developer.
KAlarm author -- http://www.astrojar.org.uk/kalarm