Docker series: 2. Create your first container.

Below are the commands which can be used to run the container,

2. Create your first container

Use docker run to create your first container.

[root@machine1 ~]# docker run -i -t --name "mycontainer" centos:latest /bin/bash
Unable to find image 'centos:latest' locally
latest: Pulling from library/centos
8ba884070f61: Pull complete
Digest: sha256:a799dd8a2ded4a83484bbae769d97655392b3f86533ceb7dd96bbac929809f3c
Status: Downloaded newer image for centos:latest

[root@f6738e50ac22 /]# hostname -f
f6738e50ac22

[root@f6738e50ac22 /]# uname -r
3.10.0-957.1.3.el7.x86_64
[root@f6738e50ac22 /]# uname -a
Linux f6738e50ac22 3.10.0-957.1.3.el7.x86_64 #1 SMP Thu Nov 29 14:49:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

[root@f6738e50ac22 /]# ps -elf
F S UID        PID  PPID  C PRI  NI ADDR SZ WCHAN  STIME TTY          TIME CMD
4 S root         1     0  0  80   0 -  2955 do_wai 22:20 pts/0    00:00:00 /bin/bash
4 R root        17     1  0  80   0 - 12935 -      22:21 pts/0    00:00:00 ps -elf

As you can see you have launched the container with command /bin/bash.

If you login to another container, you would see the container which is running,

[root@machine1 ~]# docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f6738e50ac22 centos:latest “/bin/bash” 2 minutes ago Up 2 minutes mycontainer
[root@machine1 ~]#

You can also see all docker images which are pulled as,

[root@machine1 ~]# docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu latest 4c108a37151f 4 weeks ago 64.2MB
centos latest 9f38484d220f 4 months ago 202MB
hello-world latest fce289e99eb9 6 months ago 1.84kB

Series next read:

https://medium.com/cloudscoop/cloudscoop-docker-series-create-docker-hub-account-88c2c3638400