mount storage mounts on build and filter for dockerfile apps. closes #2207

tests/unit/20_storage.bats

@@ -38,3 +38,18 @@ teardown() {
   assert_output "Mount path does not exist."
   assert_failure
 }
+
+@test "(storage) storage:mount (dockerfile)" {
+  run /bin/bash -c "dokku storage:mount $TEST_APP /tmp/mount:/mount"
+  echo "output: "$output
+  echo "status: "$status
+  assert_success
+
+  deploy_app dockerfile
+
+  CID=$(< $DOKKU_ROOT/$TEST_APP/CONTAINER.web.1)
+  run /bin/bash -c "docker inspect -f '{{ .HostConfig.Binds }}' $CID"
+  echo "output: "$output
+  echo "status: "$status
+  assert_output "[/tmp/mount:/mount]"
+}