enable_ipv6 not recognised from version 3.0 · Issue #4958 · docker/compose
https://github.com/docker/compose/issues/4958
> $ docker-compose up
> ERROR: The Compose file './docker-compose.yml' is invalid because:
> networks.app_net value Additional properties are not allowed ('enable_ipv6' was unexpected)
そもそもこんなメッセージ出てなくないか?