diff --git a/docker-compose.ci.yml b/docker-compose.ci.yml
index 5062498..b5e6165 100644
--- a/docker-compose.ci.yml
+++ b/docker-compose.ci.yml
@@ -24,6 +24,18 @@ services:
     networks:
       - default
       - gitea_gitea
+    # Even with postgres NOT attached to gitea_gitea, the app container's DNS
+    # for "postgres" still returns ambiguous results: Gitea's core stack on
+    # gitea_gitea has its own container named "postgres", and Docker's
+    # embedded DNS resolves bare names against ALL attached networks. Result:
+    # the app's startup script's `prisma db push` and the seed script's
+    # `prisma.user.count()` may cache different IPs and end up on different
+    # DBs (one with our schema, one without — Gitea's). Pin DATABASE_URL and
+    # REDIS_URL to the unique compose container names so resolution is
+    # unambiguous regardless of attached networks.
+    environment:
+      DATABASE_URL: postgresql://capakraken:capakraken_dev@capakraken-postgres-1:5432/capakraken
+      REDIS_URL: redis://capakraken-redis-1:6379
 
 networks:
   gitea_gitea: