chore(env): add bundled test accounts and seed admin

docker-compose.yml

@@ -1,5 +1,7 @@
 services:
   backend:
+    env_file:
+      - .env
     build:
       context: .
       dockerfile: Dockerfile.backend
@@ -10,6 +12,8 @@ services:
     restart: unless-stopped
 
   frontend:
+    env_file:
+      - .env
     build:
       context: .
       dockerfile: Dockerfile.frontend