updating configuration to load correct variables

backend/docker-compose.yml

@@ -21,10 +21,10 @@ services:
       - "redis"
     environment:
       setup_done: "false"
-      setup_admin_user: "${setup_admin_user}"
+      setup_admin_user: "${setup_admin_email}"
       setup_admin_password: "${setup_admin_password}"
       db_uri: "postgres://postgres:${POSTGRES_PASSWORD}@db/postgres"
-      WEB2PY_PASSWORD: admin
+      WEB2PY_PASSWORD: "${setup_admin_password}"
       WEB2PY_ADMIN_SECURITY_BYPASS: "true"
       db_migrate: "true"
       cors_allowed: '["${FRONTEND_URL}"]'