diff --git a/.gitea/workflows/ci-cd.yml b/.gitea/workflows/ci-cd.yml
index 0e598cb..420c88c 100644
--- a/.gitea/workflows/ci-cd.yml
+++ b/.gitea/workflows/ci-cd.yml
@@ -349,6 +349,12 @@ jobs:
         if: always()
         run: docker compose -f docker-compose.yml -f docker-compose.admin.yml ps
 
-      - name: Prune old images
+      - name: Prune old meezi images
         if: success()
-        run: docker image prune -f
+        # Only remove untagged (dangling) meezi images — never touches other projects
+        run: |
+          docker images --format '{{.Repository}}:{{.Tag}} {{.ID}}' \
+            | grep '^hostexecutor-' \
+            | grep '<none>' \
+            | awk '{print $2}' \
+            | xargs -r docker rmi || true
diff --git a/docker-compose.yml b/docker-compose.yml
index a469263..bc98c77 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,3 +1,5 @@
+name: meezi   # Lock project name — prevents runner workspace from overriding it
+
 # Meezi — main stack (Postgres, Redis, API, Dashboard, Website, Koja)
 #
 # All images/packages served from Nexus at mirror.soroushasadi.com: