diff --git a/PORTS b/PORTS
--- a/PORTS
+++ b/PORTS
@@ -1,3 +1,27 @@
+reserved-for-legacy-docker-migration-high-priority
+    23080   Phabricator HTTP - River Sector
+    35080   Phabricator HTTP - Wolfplex
+    36080   Phabricator HTTP - Zed
+
+reserved-for-legacy-docker-migration-medium-priority
+     3000   Mastodon public HTTP
+     4000   Mastodon streaming HTTP
+    15674   RabbitMQ
+    37080   Notifications center HTTP
+    41080   Nasqueron Tools HTTP
+
+reserved-for-legacy-docker-migration-low-priority
+     4440   Rundeck HTTP
+    21080   Drupal CRM HTTP
+    22080   Zammad HTTP
+    26080   Sentry HTTP
+    27080   Grafana HTTP
+    28080   phrahile HTTP
+    29080   etcd HTTP
+    32080   Discourse HTTP
+    33080   Bugzilla HTTP - Espace Win
+    40080   RocketChat HTTP
+
 paas-docker
      5000   Docker registry HTTP
      9090   Openfire HTTP