Force postgres:17 image in Docker Compose file given breaking docker volume structure changes and the need for further testing on version 18 of Postgres.

docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   postgres:
-    image: "postgres"
+    image: "postgres:17"
     container_name: "postgres"
     environment:
       POSTGRES_PASSWORD: $DockerComposePostgresPassword