Try OPAM init without profile mods.

.gitlab-ci.yml

@@ -9,7 +9,7 @@ before_script:
   - apt-get install -y python3-virtualenv virtualenv supervisor opam redis-server redis-tools libev4 libev-dev libsndfile1 quelcom # mariadb-server libmariadbclient-dev
   - /usr/bin/virtualenv venv
   - . venv/bin/activate
-  - opam init -y
+  - opam init -n
   - opam switch create 4.08.0
   - python3 -V
   - pip3 install -r requirements.txt