new image for testing

.gitlab-ci.yml

@@ -4,25 +4,25 @@ stages:
   - py36
   - py37
 test-py3.4:
-  image: python:3.4 bash
+  image: python:3.4
   stage: py34
   script:
   - pip3 install -r requirements.txt
   - python3.4 -m pytest --cov rpg tests
 test-py3.5:
-  image: python:3.5 bash
+  image: python:3.5
   stage: py35
   script:
   - pip3 install -r requirements.txt
   - python3.5 -m pytest --cov rpg tests
 test-py3.6:
-  image: python:3.6 bash
+  image: python:3.6
   stage: py36
   script:
   - pip3 install -r requirements.txt
   - python3.6 -m pytest --cov rpg tests
 test-py3.7:
-  image: python:3.7 bash
+  image: python:3.7
   stage: py37
   script:
   - pip3 install -r requirements.txt