wrap steps in the steps block

Jenkinsfile

@@ -18,8 +18,10 @@ pipeline {
       }
     }
     stage('Build dependencies') {
-      sh 'bundle install'
+      steps {
-      sh 'sequel -m db/migrations sqlite://db/${DB_NAME}'
+        sh 'bundle install'
+        sh 'sequel -m db/migrations sqlite://db/${DB_NAME}'
+      }
     }
   }
 }