chore(ci): yarn install verbose does not exist anymore, maybe one job…

… at a time works better?

Dockerfile

@@ -25,7 +25,7 @@ RUN rm -rf packages/mock-n7-ldap pack
 RUN rm -rf packages/oauth-client
 
 RUN df -h
-RUN yarn install --verbose
+RUN yarn install 
 RUN df -h; exit 1
 RUN yarn cp-env
 RUN yarn generate-buildinfo