Modern Full-Stack Development

 Listing  Containers
For listing containers, it’s just as easy:
docker ps
Chapter 12   Bringing the Dev Ship into harBor: DoCker

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That shows your containers, but it only shows you running containers. After this 
example container finishes its work, it shuts down immediately. Therefore, you won’t see 
it listed there. However, the container still exists in a sense, and you can see it by adding 
an option to the previous command:
docker ps -a
Figure 
12-4
 shows the result which, if you’ve been following along, should show two 
containers in the Exited state.
Figure 12-4.  The non-running containers on the system