"--tty" is not needed

README.md

@@ -10,7 +10,7 @@ A Docker image based on Ubuntu 18.04 with the Xfce desktop environment,
 ```sh
 docker run \
   --name xubuntu \
-  --detach --tty \
+  --detach \
   --shm-size 2g \
   --publish 3322:3322/tcp \
   --publish 3389:3389/tcp \

run-with-virtualgl.sh

@@ -35,7 +35,7 @@ printf -- '%s\n' "Creating \"${CONTAINER_NAME:?}\" container..."
 "${DOCKER:?}" run \
 	--name "${CONTAINER_NAME:?}" \
 	--hostname "${CONTAINER_NAME:?}" \
-	--detach --tty \
+	--detach \
 	--privileged \
 	--shm-size 2g \
 	--publish 3322:3322/tcp \

run.sh

@@ -35,7 +35,7 @@ printf -- '%s\n' "Creating \"${CONTAINER_NAME:?}\" container..."
 "${DOCKER:?}" run \
 	--name "${CONTAINER_NAME:?}" \
 	--hostname "${CONTAINER_NAME:?}" \
-	--detach --tty \
+	--detach \
 	--shm-size 2g \
 	--publish 3322:3322/tcp \
 	--publish 3389:3389/tcp \