package daemon // import "github.com/docker/docker/daemon" import ( "github.com/docker/docker/container" "github.com/opencontainers/runtime-spec/specs-go" ) func setLinuxDomainname(c *container.Container, s *specs.Spec) { // There isn't a field in the OCI for the NIS domainname, but luckily there // is a sysctl which has an identical effect to setdomainname(2) so there's // no explicit need for runtime support. s.Linux.Sysctl = make(map[string]string) if c.Config.Domainname != "" { s.Linux.Sysctl["kernel.domainname"] = c.Config.Domainname } }