Docker : Install2018/05/30

	Install Docker which is the Operating System-Level Virtualization Tool, which automates the deployment of applications inside Containers.
[1]	Install Docker.

[root@dlp ~]#

dnf -y install docker

[root@dlp ~]#

systemctl start docker

[root@dlp ~]#

systemctl enable docker

[2]	Download an official image and create a Container and output the words [Welcome to the Docker World] inside the Container.

# download the image

[root@dlp ~]#

docker pull fedora

Using default tag: latest
Trying to pull repository docker.io/library/fedora ...
.....
.....

# run echo inside Container

[root@dlp ~]#

docker run fedora /bin/echo "Welcome to the Docker World"

Welcome to the Docker 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 ~]#

docker run -i -t fedora /bin/bash

[root@9fbefde05ed8 /]#

# Container's console

[root@9fbefde05ed8 /]#

uname -a

Linux 9fbefde05ed8 4.16.6-302.fc28.x86_64 #1 SMP Wed May 2 00:07:06 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
[root@9fbefde05ed8 /]#

exit

exit
[root@dlp ~]#

# come back

[4]	If exit from the Container session with keeping container's process, push [Ctrl+p] and [Ctrl+q] key.

[root@dlp ~]#

docker run -i -t fedora /bin/bash

[root@e31197f3854a /]# [root@dlp ~]#

# Ctrl+p, Ctrl+q

# show docker process

[root@dlp ~]#

docker ps

CONTAINER ID   IMAGE    COMMAND       CREATED          STATUS           PORTS    NAMES
e31197f3854a   fedora   "/bin/bash"   18 seconds ago   Up 17 seconds             suspicious_roentgen

# connect to container's session

[root@dlp ~]#

docker exec -it e31197f3854a /bin/bash

[root@e31197f3854a /]#

# connected

# shutdown container's process from Host's console

[root@dlp ~]#

docker kill e31197f3854a

[root@dlp ~]#

docker ps

CONTAINER ID    IMAGE          COMMAND       CREATED          STATUS          PORTS     NAMES

Matched Content