Docker wait command

Docker wait command waits till the container stops and returns the exit codes.

Eg:

1. Start a container in terminal 1.
   [root@localhost /]# docker run -dit --name=my_container ubuntu bash
   6eeb1f587cebdb3c4e9c071b4794a25f17c41c7afa4b1119967eb9d0775875f1
   [root@localhost /]# docker wait my_container

2. In another terminal stop the container my_container created in terminal1.
   [root@localhost ~]# docker stop my_container
   my_container

3. In terminal 1 you will notice the wait command returns the exit code:
   [root@localhost /]# docker wait my_container
   137