ลองใช้ Podman แทน Docker ใน CentOS 8

podman run hello-world
Trying to pull registry.access.redhat.com/hello-world...
  name unknown: Repo not found
Trying to pull registry.fedoraproject.org/hello-world...
  manifest unknown: manifest unknown
Trying to pull registry.centos.org/hello-world...
  manifest unknown: manifest unknown
Trying to pull docker.io/library/hello-world...
Getting image source signatures
Copying blob 1b930d010525 done
Copying config fce289e99e done
Writing manifest to image destination
Storing signatures

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

podman container ls -a
CONTAINER ID  IMAGE                                 COMMAND    CREATED         STATUS                     PORTS  NAMES
0175e1d84375  docker.io/library/hello-world:latest  /hello     22 minutes ago  Exited (0) 22 minutes ago         zealous_leakey
a82ca14e379b  docker.io/library/alpine:latest       sh         42 hours ago    Up 42 hours ago                   gallant_ellis
493b3889a145  docker.io/library/alpine:latest       /bin/bash  42 hours ago    Created                           vigilant_volhard
fc53c0e17871  docker.io/library/alpine:latest       /bash/bin  42 hours ago    Created                           pensive_buck

alias docker=podman