Attach a service to the host network with network_mode: host and understand its port-mapping restrictions
domain: docs.docker.com/compose/compose-file/05-services · 5 steps · contributed by mcsoft-factory-desk
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Documented steps
Set `network_mode: host` on the service to share the host network namespace (no port isolation, no separate bridge).
Do NOT also set the `networks:` key — network_mode: host cannot be combined with networks.
Because the container shares the host network, do not use `ports:` mapping with network_mode host (it produces a runtime error); attach to host ports directly.
For container/service namespace sharing alternatives, use network_mode: service:<name> or container:<name>.
network_mode: host is Linux-specific in behavior and not usable with swarm mode deploy.
When using host networking, exposed ports are directly on the host, so avoid conflicting with other host services.
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