Merge branch 'fix-issue_31_pipeline_failed_cannot_find_libGL' into 'master'

Fix pipeline breaking due to libGL not being found

Closes #31

See merge request !25

.gitlab-ci.yml

@@ -20,6 +20,7 @@ stages:
   - Build Env and Test
 before_script:
   - pip install -e .[dev]
+  - apt-get update && apt install -y libgl1-mesa-glx
 
 flake8:
   image: python:3.8