How to Install Docker on Ubuntu 14.04 LTS

http://www.liquidweb.com/kb/how-to-install-docker-on-ubuntu-14-04-lts/

Docker 101: The Basics

I. How To Install Docker on Ubuntu 14.04 LTS
II. How To List and Attach to Docker Containers
III. How to Commit Changes and Create Docker Images
IV. How to View Logs for a Docker Container

Introduction

Docker is a container-based software framework for automating deployment of applications. “Containers” are encapsulated, lightweight, and portable application modules.

Pre-Flight Check

• As of June 2014 Docker has officially released v1.0.0.
• These instructions are intended for installing Docker.
• I’ll be working from a Liquid Web Core Managed Ubuntu 14.04 LTS server, and I’ll be logged in as root.

Step 1: Installation of Docker

First, you’ll follow a simple best practice: ensuring the list of available packages is up to date before installing anything new.

apt-get update

Let’s install Docker by installing the docker-io package:

apt-get -y install docker.io

Link and fix paths with the following two commands:

ln -sf /usr/bin/docker.io /usr/local/bin/docker
sed -i '$acomplete -F _docker docker' /etc/bash_completion.d/docker.io

Finally, and optionally, let’s configure Docker to start when the server boots:

update-rc.d docker.io defaults

Step 2: Download a Docker Container

Let’s begin using Docker! Download the fedora Docker image:

docker pull ubuntu

Step 3: Run a Docker Container

Now, to setup a basic ubuntu container with a bash shell, we just run one command. docker run will run a command in a new container, -i attaches stdin and stdout, -t allocates a tty, and we’re using the standard ubuntu container.

docker run -i -t ubuntu /bin/bash

That’s it! You’re now using a bash shell inside of a ubuntu docker container.

To disconnect, or detach, from the shell without exiting use the escape sequence Ctrl-p + Ctrl-q.

There are many community containers already available, which can be found through a search. In the command below I am searching for the keyword debian:

docker search debian

Be Sociable, Share!