Actually install the dev packages for CI

.gitlab-ci.yml

@@ -12,7 +12,7 @@ before_script:
   - apt-get update -qy
   - apt-get install -y redis-server
   - pip install pipenv
-  - pipenv install --system --deploy
+  - pipenv install -d --system --deploy
   - nohup redis-server &
   - cd go/
   - export GO_SECRET_KEY=$(dd if=/dev/urandom count=100 | tr -dc "A-Za-z0-9" | fold -w 60 | head -n1 2>/dev/null)