> I always have to define 'external: true' at the network That option has nothing to do with the problem at hand. https://docs.docker.com/reference/compose-fi

> I always have to define 'external: true' at the network That option has nothing to do with the problem at hand. https://docs.docker.com/reference/compose-file/networks/#external https://docs.docker.com/reference/compose-file/networks/#ext...