update test to have ignores

deploy/staging

@@ -29,8 +29,8 @@ pipeline {
     stage('cleanup old images') {
         steps {
             sh '''
-                docker image prune --filter "until=168h" --filter "label!=latest"
-                docker rmi $(docker images | grep 'dev-test')
+                docker image prune --filter "until=168h" --filter "label!=latest" || true
+                docker rmi $(docker images | grep 'dev-test') || true
             '''
         }
     }