Make networks a list so it can be decided by the provisioner to which to

connect to

provisioner/dind.go

@@ -64,6 +64,7 @@ func (d *DinD) InstanceNew(session *types.Session, conf types.InstanceConfig) (*
 		CACert:        conf.CACert,
 		HostFQDN:      conf.Host,
 		Privileged:    true,
+		Networks:      map[string]string{session.Id: conf.Hostname},
 	}
 
 	dockerClient, err := d.factory.GetForSession(session.Id)

provisioner/windows.go

@@ -82,6 +82,7 @@ func (d *windows) InstanceNew(session *types.Session, conf types.InstanceConfig)
 		CACert:          conf.CACert,
 		Privileged:      false,
 		HostFQDN:        conf.Host,
+		Networks:        map[string]string{session.Id: conf.Hostname},
 	}
 
 	dockerClient, err := d.factory.GetForSession(session.Id)