If needed, run this in a crontab. There might be further, and more intelligent, options to optimize our use of docker containers. Currently (Aug 2020) pulling docker containers is responsible for a sizeable fraction of runtime on the runners.
# Testing Matrix
We try to test on a variety of systems, both in Debug and Release build types at all times. Those systems should include two systems close to the minimum requirement we have, two contemporary systems that are widely distributed at any time, and one/two bleeding-edge systems. This is a goal, which is limited by actual computing power.
Compilers, minimum is gcc and clang. Also gfortran, nice would be to add f19 and flang.
Minimum system requirements: cmake 3.9, gcc-7.4, clang-8, python3.6, conan v?.