Here’s the command to stop and remove all Docker containers.
docker stop $(docker ps -a -q) docker rm $(docker ps -a -q) |
Run Docker Without Sudo
Run Docker without sudo. Add user to docker group. Login as docker using newgrp.
sudo gpasswd -a $user docker newgrp docker |
You can now run the following commands without sudo.
docker ps
docker images |
Every time you open a new terminal , just run.
newgrp docker |
SSH To A Docker Container
Docker containers are awesome. Docker allows you to quickly create development environments in a matter of minutes. Docker gives you the ability to package, ship and share your docker image to anyone. Once your docker image is on the Docker repository, anyone can pull it down and run it on their own operating system.
To keep track of running containers on your system, you can type ‘docker ps -a’ on your terminal.
$ docker ps -a # gives a result similar to this ... CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES f322d2370415 moul/icecast "/start.sh" 2 hours ago Up 2 hours 0.0.0.0:8000->8000/tcp icecast_icecast_1 |
If you would like to SSH to a running Docker container, just run the following from the terminal.
docker exec -t -i f322d2370415 /bin/bash # it will take you to this ... root@f322d2370415:/# |
f322d2370415 is the Container ID, while /bin/bash is the shell that you would like to use.
WordPress on Docker
WordPress is a content management system for running blogs or websites. Meanwhile, Docker is a software container platform for building, shipping and running applications or utilities. Since there are thousands of Docker images already built, installing an application such as WordPress is fairly easy. In this article, I will show you how to install WordPress, MySQL, PHPMyadmin in a Docker environment. First things first, install Docker. Docker is agnostic, meaning it really doesn’t matter what platform you use, whether you’re on Windows, Linux or the Mac. Download Docker Docker. Install.
Create A Project Folder
$ mkdir wordpress $ cd wordpress |
Create a Docker Compose file
The docker file for composing an image is called docker-compose.yml. It’s a YAML file that contains instructions on what to do and apps to use.
$ nano docker-compose.yml |
Type in the following configuration in the YAML file. In this example, I’m telling docker to install WordPress, MySQL and PHPMyAdmin and using the following TCP ports, credentials, and volumes.
wordpress:
image: wordpress
links:
- wordpress_db:mysql
ports:
- 8080:80
volumes:
- ~/Docker/wordpress/html:/var/www/html
wordpress_db:
image: mariadb
environment:
MYSQL_ROOT_PASSWORD: password
phpmyadmin:
image: corbinu/docker-phpmyadmin
links:
- wordpress_db:mysql
ports:
- 8181:80
environment:
MYSQL_USERNAME: root
MYSQL_ROOT_PASSWORD: password |
Run Docker Compose
$ docker-compose up -d |
The installation may take anywhere from 5-10 mins or longer. So, grab a cup of coffee.
Access WordPress
Once installed, open up your browser and access WordPress and PHPMyadmin
http://localhost:8080 http://localhost:8181 |
You can access the WordPress files from your project’s “wordpress/html” directory.
That’s it.