Speedup Tests for faster Development

[GollyTicker]

The containerized tests are quite slow and need a full 1.5 mintes - which can be annoying during development, when one wants quick feedback.

How might we speedup this workflow?

• selectvely only enable a subset of the tests during development. This is what I do currently
• speedup by parallelisation: didn't quite work, because docker was the bottleneck. see branch https://github.com/qaware/protocurl/tree/archive/attempt-parallel-tests
• speedup by moving all tests into a single docker container rather than isolated docker containers. We loose tests-isolation and tests-independence, but gains much speed. however, we get quite convoluted stuff to do mto make it all work again. perhaps not simply worth it... see branch https://github.com/qaware/protocurl/tree/enhancement/attempt-tests-speedup