Install Docker
sudo apt install docker.io
Adding a current user to the docker group to avoid sudo prefix in all docker commands
sudo usermod -aG docker $USER
Example search (for tomcat) images on Docker Hub
docker search tomcat
Download image
without starting the container. example with Wordpress image.
docker pull wordpress
See local (downloaded) images
docker images
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
tomcat Apache Tomcat is an open source implementati… 2701 [OK]
tomee Apache TomEE is an all-Apache Java EE certif… 77 [OK]
dordoka/tomcat Ubuntu 14.04, Oracle JDK 8 and Tomcat 8 base… 53 [OK]
bitnami/tomcat Bitnami Tomcat Docker Image 31 [OK]
kubeguide/tomcat-app Tomcat image for Chapter 1 28
consol/tomcat-7.0 Tomcat 7.0.57, 8080, "admin/admin" 17 [OK]
cloudesire/tomcat Tomcat server, 6/7/8 15 [OK]
aallam/tomcat-mysql Debian, Oracle JDK, Tomcat & MySQL 12 [OK]
arm32v7/tomcat Apache Tomcat is an open source implementati… 10
rightctrl/tomcat CentOS , Oracle Java, tomcat application ssl… 6 [OK]
maluuba/tomcat7-java8 Tomcat7 with java8. 4
...
REPOSITORY TAG IMAGE ID CREATED SIZE
wordpress php7.4-fpm-alpine 78ac3963ff95 2 weeks ago 201MB
amazonlinux latest cd2d92bc1c0c 2 weeks ago 163MB
php 7.4-fpm-alpine 0e798217e66f 3 weeks ago 81.4MB
See running images
docker ps
Run container example
Interactive mode start
of tomcat with mapping port 8080 of container to 8080 on server
docker run -it -p 8080:8080 tomcat
Background start
docker run -d 8080:8080 tomcat
Delete images
work if no running containers on that image
docker rmi wordpress
Create Custom docker image using Dockerfile
vi Dockerfile
Dockerfile
FROM amazonlinux RUN yum -y update RUN yum -y install httpd RUN yum -y install php COPY ./index.php /var/www/html/index.php CMD ["/usr/sbin/httpd", "-D", "FOREGROUND"] EXPOSE 80
index.php
<?php phpinfo(); ?>
Build an image
using Dockerfile in current "." directory
docker build --tag example/amzn-phpinfo .
See image info
docker image history example/amzn-phpinfo
IMAGE CREATED CREATED BY SIZE COMMENT
77066f284dea 2 minutes ago /bin/sh -c #(nop) EXPOSE 80 0B
ee2fcebe08bb 2 minutes ago /bin/sh -c #(nop) CMD ["/usr/sbin/httpd" "-… 0B
ac29f44aa839 2 minutes ago /bin/sh -c #(nop) COPY file:7aa92ce52044b7f0… 20B
9352d0227e03 2 minutes ago /bin/sh -c yum -y install php 203MB
47ac5b8a84d6 3 minutes ago /bin/sh -c yum -y install httpd 255MB
0e2161f5a988 3 minutes ago /bin/sh -c yum -y update 193MB
cd2d92bc1c0c 2 weeks ago /bin/sh -c #(nop) CMD ["/bin/bash"] 0B
<missing> 2 weeks ago /bin/sh -c #(nop) ADD file:119ae574c5d5b6e59… 163MB
docker image inspect example/amzn-phpinfo
