gitlab-ci-cd/drupal#51 Make sure sanitized branch name is always lowercase

bin/update-env

@@ -18,7 +18,7 @@ if [[ "$CI_COMMIT_REF_NAME" = "" ]]; then
 else
   PROJECT_BRANCH=$CI_COMMIT_REF_NAME
 fi
-PROJECT_BRANCH_SANITIZED=$(echo "$PROJECT_BRANCH" | sed -r 's/[\/_]+/-/g')
+PROJECT_BRANCH_SANITIZED=$(echo "$PROJECT_BRANCH" | tr [:upper:] [:lower:] | sed -r 's/[\/_]+/-/g')
 
 echo "PROJECT_NAME=${PROJECT_NAME}" >>.env
 echo "PROJECT_BRANCH=${PROJECT_BRANCH}" >>.env