ci: try define app runtime in compose.yaml

Author: aaa2000

compose.yaml

@@ -23,6 +23,7 @@ services:
       MERCURE_JWT_SECRET: ${CADDY_MERCURE_JWT_SECRET:-!ChangeThisMercureHubJWTSecretKey!}
       OIDC_SERVER_URL: ${OIDC_SERVER_URL:-https://localhost/oidc/realms/demo}
       OIDC_SERVER_URL_INTERNAL: ${OIDC_SERVER_URL_INTERNAL:-http://keycloak:8080/oidc/realms/demo}
+      APP_RUNTIME: Symfony\\Component\\Runtime\\SymfonyRuntime
     volumes:
       - caddy_data:/data
       - caddy_config:/config