Resolve "prepare Dockerfile and CI for testing image build"

Closes #1 (closed)

assigned to @hynek

marked this merge request as ready

added 2 commits

• f05ad66e - build(docker): add code and labels; run as non-root user
• a0032db7 - ci(gitlab): lint dockerfile; build container image and push to gitlab and harbor registry

Compare with previous version

merged

mentioned in commit cba495b6