services: machine-1: build: context: ./ dockerfile: ./Dockerfile network: host networks: - machines machine-2: build: context: ./ dockerfile: ./Dockerfile network: host networks: - machines machine-3: build: context: ./ dockerfile: ./Dockerfile network: host networks: - machines machine-4: build: context: ./ dockerfile: ./Dockerfile network: host networks: - machines networks: machines: enable_ipv6: true attachable: true