Allow not serving the toplevel domain

internal/dis/component/ssh2/server_handler.go

@@ -45,7 +45,7 @@ func (ssh2 *SSH2) handleConnection(session ssh.Session) {
 		{"${SLUG}", slug},
 		{"${HOSTNAME}", slug + "." + ssh2.Config.HTTP.PrimaryDomain},
 
-		{"${DOMAIN}", ssh2.Config.HTTP.PrimaryDomain},
+		{"${DOMAIN}", ssh2.Config.HTTP.PublicTopDomain()},
 		{"${PORT}", strconv.FormatUint(uint64(ssh2.Config.Listen.SSHPort), 10)},
 
 		{"${HELP_URL}", ssh2.Config.HTTP.JoinPath("user", "ssh").String()},

internal/dis/component/ssh2/stack.go

@@ -22,7 +22,6 @@ func (ssh *SSH2) Stack() component.StackWithResources {
 
 		EnvContext: map[string]string{
 			"DOCKER_NETWORK_NAME": ssh.Config.Docker.Network(),
-			"HOST_RULE":           ssh.Config.HTTP.DefaultHostRule(),
 
 			"CONFIG_PATH": ssh.Config.ConfigPath,
 			"DEPLOY_ROOT": ssh.Config.Paths.Root,