diff --git a/Justfile b/Justfile
index a74b61d..7896e17 100644
--- a/Justfile
+++ b/Justfile
@@ -37,7 +37,7 @@ publish db=VARIANT:
 
 # Start the database and wait until it's healthy
 db-up db=VARIANT:
-  docker build {{db}}
+  just build {{db}}
   docker compose -f {{db}}/compose.yml up -d --wait
 
 # Stop the database container but preserve data volumes
diff --git a/postgres/compose.yml b/postgres/compose.yml
index bb7f5de..40fe677 100644
--- a/postgres/compose.yml
+++ b/postgres/compose.yml
@@ -7,8 +7,7 @@ services:
       POSTGRES_USER: ${POSTGRES_USER:-postgres}
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-postgres}
       POSTGRES_DB: ${POSTGRES_DB:-postgres}
-    ports:
-      - "${POSTGRES_PORT:-5432}:5432"
+      POSTGRES_PORT: ${POSTGRES_PORT:-5432}
     volumes:
       - postgres_data:/var/lib/postgresql
     healthcheck: