Add CI

.gitlab-ci.yml

+image: $CONTAINER_TEST_IMAGE
+
+variables:
+  CONTAINER_TEST_IMAGE: gitlab-registry.mpcdf.mpg.de/$CI_PROJECT_PATH:$CI_BUILD_REF_NAME
+  OMP_NUM_THREADS: 4
+  GIT_SUBMODULE_STRATEGY: recursive
+
+stages:
+  - first
+  - second
+
+build_docker:
+  image: docker:stable
+  stage: first
+  script:
+    - docker login -u gitlab-ci-token -p $CI_BUILD_TOKEN gitlab-registry.mpcdf.mpg.de
+    - docker build -t $CONTAINER_TEST_IMAGE .
+    - docker push $CONTAINER_TEST_IMAGE
+
+test_serial:
+  stage: second
+  script:
+    - pytest -q --cov=src test.py
+    - >
+      python3 -m coverage report | tee coverage.txt
+    - >
+      grep TOTAL coverage.txt | awk '{ print "TOTAL: "$4; }'

Dockerfile

 FROM python:3.6-buster
 
+RUN pip3 install "scipy>=1.4" matplotlib git+https://gitlab.mpcdf.mpg.de/ift/nifty@bb1069ae91a0bca50af3ec49d6c6c5957424e9ae git+https://gitlab.mpcdf.mpg.de/ift/nifty_gridder.git@f1540b9cca161e1aa32aa3cd09a592b3dac5f16b pytest pytest-cov
+
 ENV MPLBACKEND agg
 WORKDIR /eht