Add python 3.10 image and testing

.gitlab-ci.yml

@@ -154,9 +154,7 @@ python-3.10:
   stage: test
   script:
     - python -m pip install .
-    - python -m pip install schwimmbad
     - python -m pip list installed
-
     - pytest test/integration/sampler_run_test.py --durations 10 -v
 
 python-3.8-samplers:
@@ -253,6 +251,8 @@ pages:
   stage: deploy
   image: docker:20.10.12
   needs: ["containers"]
+  only:
+    - schedules
   script:
     - cd containers
     - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY