CentOS 8
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Podman : Install2019/10/11
 
Install Podman that is Container management tool.
It's possible to use the same ease of use of Docker Cli and also Podman does not need specific Service Daemon.
[1] Install Podman.
[root@dlp ~]#
dnf -y install podman
[2] Download an official image and create a Container and output the words [Welcome to the Podman World] inside the Container.
# download official image

[root@dlp ~]#
podman pull centos 

Trying to pull docker.io/centos:latest...Getting image source signatures
Copying blob 729ec3a6ada3: 68.21 MiB / 68.21 MiB  4s
Copying config 0f3e07c0138f: 2.13 KiB / 2.13 KiB  0s
Writing manifest to image destination
Storing signatures
0f3e07c0138fbe05abcb7a9cc7d63d9bd4c980c3f61fea5efa32e7c4217ef4da
# run echo inside Container

[root@dlp ~]#
podman run centos /bin/echo "Welcome to the Podman World"

Welcome to the Podman World
[3] Connect to the interactive session of a Container with [i] and [t] option like follows. If [exit] from the Container session, the process of a Container finishes.
[root@dlp ~]#
podman run -it centos /bin/bash

[root@1062d638cd7a /]#    
# connected
[root@1062d638cd7a /]#
uname -a

Linux 1062d638cd7a 4.18.0-80.7.1.el8_0.x86_64 #1 SMP Sat Aug 3 15:14:00 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
[root@1062d638cd7a /]#
exit

exit
[root@dlp ~]#    
# come back
[4] If you'd like to run a Container as a Daemon, add [d] option.
[root@dlp ~]#
podman run -itd centos /bin/bash 

81d101111d73e4b35dbd6b9a30aa75be8b9a43895430d569f9625ca6764289e5
# show podman proceses

[root@dlp ~]#
podman ps 

CONTAINER ID  IMAGE                            COMMAND    CREATED        STATUS            PORTS  NAMES
81d101111d73  docker.io/library/centos:latest  /bin/bash  3 seconds ago  Up 3 seconds ago         suspicious_lalande
# attach to container session

[root@dlp ~]#
podman exec -it 81d101111d73 /bin/bash

[root@81d101111d73 /]#    
# connected

[root@81d101111d73 /]#
exit
# stop container process (if force stop, specify [kill])

[root@dlp ~]#
podman stop 81d101111d73

[root@dlp ~]#
podman ps 

CONTAINER ID  IMAGE  COMMAND  CREATED  STATUS  PORTS  NAMES
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