diff --git a/DockerCommands/docker b/DockerCommands/docker
index d61af2e..fd0abf6 100644
--- a/DockerCommands/docker
+++ b/DockerCommands/docker
@@ -1,4 +1,5 @@
 Docker:-Container
+test
 
 apt-get update
 apt-get install docker.io
@@ -196,10 +197,50 @@ mysql> select * from emp;
 | xyz  | 5555555 |
 +------+---------+
 1 row in set (0.00 sec)
+history of docker image
+docker image history image_name
 
+Detalis information of docker image
+docker image inspect image_id
 
+delete all unused image
+docker image prune
 
+if add new slave with master
+docker swarm join-token worker
 
+join as a master
+docker swarm join-token manager
 
+left from swarm
+docker swarm leave
 
+make all slave master(docker swarm olny allow 1,3,5,7 master node)
+docker node promote slave1 slave2 
+
+make again slave
+docker node demote slave1 slave2
+
+docker swarm visulizer 
+
+attache the lable with worker node(this command run only master node)
+docker node update --label-add ='ssd=true' workernode01
+
+attache the replicas with label workdernpde01
+docker service create --constraint='node.labels.ssd==true' --replicas=3 -d alpine
+
+we can also configure engine level label(for engine leave need to configure the daemon.json file)
+ shift the container to other workers 
+ docker node update --availablity=drain workert01
+
+docker stack deploy:- When running Docker Engine in swarm mode, you can use docker stack deploy to deploy a complete application stack to the swarm.
+The deploy command accepts a stack description in the form of a Compose file. The docker stack deploy command supports any Compose file of version “3.0” or above.
+stack file:-
+           From the Cloud stack file YAML reference, it states a stack file is a file in YAML format that defines one or more services, similar to a docker-compose.yml file but with a few extensions.
+ 
+ docker stack deploy -c docker-compose.yml wordpresstack 
+
+* docker restart command for start the again ccontainer
+- docker start container_id
+- docker container run -d --restart unless-stop imagename