5.3. Running commands inside the container

Procedure

1. Run the container named myubi based on the registry.redhat.io/ubi10/ubi image:

   $ podman run --name=myubi -it registry.access.redhat.com/ubi10/ubi /bin/bash
   [root@6ccffd0f6421 /]#

   • The -i option creates an interactive session. Without the -t option, the shell stays open, but you cannot type anything to the shell.
   • The -t option opens a terminal session. Without the -i option, the shell opens and then exits.

2. Install the procps-ng package containing a set of system utilities (for example ps, top, uptime, and so on):

   [root@6ccffd0f6421 /]# dnf install procps-ng

3. Use the ps -ef command to list current processes:

   # ps -ef
   UID          PID    PPID  C STIME TTY          TIME CMD
   root           1       0  0 12:55 pts/0    00:00:00 /bin/bash
   root          31       1  0 13:07 pts/0    00:00:00 ps -ef

4. Enter exit to exit the container and return to the host:

   # exit

5. Optional: List all containers:

   $ podman ps
   CONTAINER ID  IMAGE                               COMMAND    CREATED         STATUS                     PORTS   NAMES
   1984555a2c27  registry.redhat.io/ubi10/ubi:latest  /bin/bash  21 minutes ago  Exited (0) 21 minutes ago          myubi

   You can see that the container is in Exited status.