* test/infra/Dockerfile.emba (emacs-gnustep): Add zlib1g-dev. Remove make instrumentation. * test/infra/gitlab-ci.yml (build-image-gnustep, test-gnustep): Uncomment.
* test/infra/Dockerfile.emba (emacs-gnustep): Add zlib1g-dev. Remove make instrumentation. * test/infra/gitlab-ci.yml (build-image-gnustep, test-gnustep): Uncomment.