fix(deploy): verify Docker clone updates against the served release

scripts/docker-preflight.sh

@@ -124,7 +124,13 @@ check_dep git
 
 doing "5. Port 3002 state (host CMS clash)"
 if (echo >/dev/tcp/127.0.0.1/"$CMS_PORT") >/dev/null 2>&1; then
-  err "port $CMS_PORT already in use on host — stop the host-side CMS (pm2 stop next) before starting the container"
+  if [ "$(docker inspect --format '{{.State.Running}}' epicnext-cms 2>/dev/null || true)" = true ]; then
+    ok "existing Compose CMS is running; use docker-update.sh to recreate and verify its release"
+  elif [ "$(docker inspect --format '{{.State.Running}}' epicnext-cms-app 2>/dev/null || true)" = true ]; then
+    wrn "CI manages the running CMS; update through CI instead of starting Compose"
+  else
+    err "port $CMS_PORT is occupied by another process; identify it before starting the CMS"
+  fi
 else
   ok "port $CMS_PORT free"
 fi