Run three containers that behave differently: one that prints and exits, one that runs your command, and a server that keeps running until you stop it.

Run the test image:

Run your own command in Alpine:

docker run alpine:3.20 echo "Hello from pier"

Start nginx in the foreground with a name. The terminal stays attached to it:

docker run --name web nginx:1.27

When the startup logs stop, press Ctrl+C.

Compare running containers with all containers:

docker ps
docker ps -a