Simple example of using Docker container

[root@node1 ~]# docker search nginx
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
nginx Official build of Nginx. 15187 [OK]       
jwilder/nginx-proxy Automated Nginx reverse proxy for docker con… 2048 [OK]
richarvey/nginx-php-fpm Container running Nginx + PHP-FPM capable of… 816 [OK]
jc21/nginx-proxy-manager Docker container for managing Nginx proxy ho… 218                  
linuxserver/nginx An Nginx container, brought to you by LinuxS… 149                  
tiangolo/nginx-rtmp Docker image with Nginx using the nginx-rtmp… 136 [OK]
jlesage/nginx-proxy-manager Docker container for Nginx Proxy Manager 123 [OK]
alfg/nginx-rtmp NGINX, nginx-rtmp-module and FFmpeg from sou… 102 [OK]
jasonrivers/nginx-rtmp Docker images to host RTMP streams using NGI… 92 [OK]
nginxdemos/hello NGINX webserver that serves a simple page co… 70 [OK]
privatebin/nginx-fpm-alpine PrivateBin running on an Nginx, php-fpm & Al… 56 [OK]
nginx/nginx-ingress NGINX and NGINX Plus Ingress Controllers for… 55                   
nginxinc/nginx-unprivileged Unprivileged NGINX Dockerfiles 45                   
staticfloat/nginx-certbot Opinionated setup for automatic TLS certs lo… 24 [OK]
nginx/nginx-prometheus-exporter NGINX Prometheus Exporter for NGINX and NGIN… 19                   
schmunk42/nginx-redirect A very simple container to redirect HTTP tra… 19 [OK]
centos/nginx-112-centos7 Platform for running nginx 1.12 or building … 15                   
centos/nginx-18-centos7 Platform for running nginx 1.8 or building n… 13                   
raulr/nginx-wordpress Nginx front-end for the official wordpress:f… 13 [OK]
bitwarden/nginx The Bitwarden nginx web server acting as ar… 11                   
flashspys/nginx-static Super Lightweight Nginx Image 10 [OK]
mailu/nginx Mailu nginx frontend 9 [OK]
sophos/nginx-vts-exporter Simple server that scrapes Nginx vts stats a… 7 [OK]
ansibleplaybookbundle/nginx-apb An APB to deploy NGINX 2 [OK]
wodby/nginx Generic nginx 1

[root@node1 ~]# docker pull nginx
Using default tag: latest
latest: Pulling from library/nginx
b4d181a07f80: Pull complete 
66b1c490df3f: Pull complete 
d0f91ae9b44c: Pull complete 
baf987068537: Pull complete 
6bbc76cbebeb: Pull complete 
32b766478bc2: Pull complete 
Digest: sha256:353c20f74d9b6aee359f30e8e4f69c3d7eaea2f610681c4a95849a2fd7c497f9
Status: Downloaded newer image for nginx:latest
docker.io/library/nginx:latest

[root@node1 ~]# docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest 4cdc5dd7eaad 2 weeks ago 133MB

[root@node1 ~]# yum install -y libseccomp-devel 
Updating Subscription Management repositories.
Unable to read consumer identity
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Repository AppStream is listed more than once in the configuration
Repository AppStream is listed more than once in the configuration
Repository BaseOS is listed more than once in the configuration
Repository AppStream is listed more than once in the configuration
Repository BaseOS is listed more than once in the configuration
Docker CE Nightly - Sources 798 B/s | 2.3 kB 00:02    
ansiable 0.0 B/s | 0 B 00:00    
Failed to synchronize cache for repo 'docker-ce-nightly-source', ignoring this repo.
Failed to synchronize cache for repo 'ansiable', ignoring this repo.
Last metadata expiration check: 2:32:21 ago on Wed 21 Jul 2021 07:51:23 PM CST.
Dependencies resolved.
===============================================================================================================================================
 Package Arch Version Repository Size
===============================================================================================================================================
Installing:
 libseccomp-devel x86_64 2.5.1-1.el8 AppStream 57k
Upgrading:
 libseccomp x86_64 2.5.1-1.el8 base 71 k

Transaction Summary
===============================================================================================================================================
Install 1 Package
Upgrade 1 Package

Total download size: 128 k
Downloading Packages:
(1/2): libseccomp-2.5.1-1.el8.x86_64.rpm 256 kB/s | 71 kB 00:00    
(2/2): libseccomp-devel-2.5.1-1.el8.x86_64.rpm 186 kB/s | 57 kB 00:00    
-----------------------------------------------------------------------------------------------------------------------------------------------
Total 414 kB/s | 128 kB 00:00     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing: 1/1 
  Upgrading: libseccomp-2.5.1-1.el8.x86_64 1/3 
  Running scriptlet: libseccomp-2.5.1-1.el8.x86_64 1/3 
  Installing: libseccomp-devel-2.5.1-1.el8.x86_64 2/3 
  Cleanup: libseccomp-2.3.3-3.el8.x86_64 3/3 
  Running scriptlet: libseccomp-2.3.3-3.el8.x86_64 3/3 
  Verifying : libseccomp-devel-2.5.1-1.el8.x86_64 1/3 
  Verifying : libseccomp-2.5.1-1.el8.x86_64 2/3 
  Verifying : libseccomp-2.3.3-3.el8.x86_64 3/3 
Installed products updated.

Upgraded:
  libseccomp-2.5.1-1.el8.x86_64                                         

Installed:
  libseccomp-devel-2.5.1-1.el8.x86_64                                                                                                         
Complete!

Note: - d runs the container in the background -p 80:80 port mapping host port: container port

[root@node1 ~]# docker run -d -p 80:80 nginx
2716e3ec14173a31d8c2168ceceefbbfecec0efe6d611bc710df0bc53748ef0c

[root@node1 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2716e3ec1417 nginx "/docker-entrypoint.…" 26 seconds ago Up 24 seconds 0.0.0.0:80->80/tcp, :::80->80/tcp naughty_driscoll

[root@node1 ~]# netstat -tunlp |grep 80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 3807/docker-proxy   
tcp6 0 0 :::80 :::* LISTEN 3814/docker-proxy   
tcp6 0 0 :::8081 :::* LISTEN 1092/httpd

[root@node1 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2716e3ec1417 nginx "/docker-entrypoint.…" 6 minutes ago Up 6 minutes 0.0.0.0:80->80/tcp, :::80->80/tcp naughty_driscoll
[root@node1 ~]# docker stop 2716e3ec1417 
2716e3ec1417
[root@node1 ~]# docker start 2716e3ec1417 
2716e3ec1417