Update codeceptjs (#19)

* Update codeceptjs

We are using an incorrect docker image that hasn't been updated for 3 years: https://hub.docker.com/r/codeception/codeceptjs

Instead, we should be using https://hub.docker.com/r/codeceptjs/codeceptjs instead.

* Update config.yml

.circleci/config.yml

@@ -64,7 +64,7 @@ commands:
       - run:
           name: Run tests
           command: |
-            docker create --network host --name tester codeception/codeceptjs codeceptjs run-multiple --all --steps --verbose
+            docker create --network host --name tester codeceptjs/codeceptjs codeceptjs run-multiple --all --steps --verbose
             docker cp $(pwd)/lock_login_spa_test.js tester:/tests/lock_login_test.js
             docker cp $(pwd)/codecept.conf.js tester:/tests/codecept.conf.js
             docker start -i tester