We cannot use array in yaml variables

.gitlab-ci.yml

@@ -7,7 +7,6 @@ cache:
 variables:
   MYSQL_ALLOW_EMPTY_PASSWORD: "1"
-  GITLAB_DATABASE: $CI_JOB_NAME[1]
   RAILS_ENV: "test"
   NODE_ENV: "test"
   SIMPLECOV: "true"

scripts/prepare_build.sh

@@ -2,11 +2,15 @@
 . scripts/utils.sh
+echo $CI_JOB_NAME
+job_name=$(echo $CI_JOB_NAME | cut -f2 -d' ')
+echo $job_name
+
 export SETUP_DB=${SETUP_DB:-true}
-export GITLAB_DATABASE=${GITLAB_DATABASE:-postgresql}
+export GITLAB_DATABASE=${GITLAB_DATABASE:-$job_name}
 export USE_BUNDLE_INSTALL=${USE_BUNDLE_INSTALL:-true}
-if [ "$GITLAB_DATABASE" = 'pg' ]; then
+if [ "$GITLAB_DATABASE" != 'mysql' ]; then
     export GITLAB_DATABASE='postgresql'
 fi