Docker installer checklist

docker-installer.md

Docker Installer

Checklist

• Update apt-get.

$ sudo apt-get update

• Get PGP key.

$ sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D

Ubuntu	version	Repository
Precise	12.04 (LTS)	deb https://apt.dockerproject.org/repo ubuntu-precise main
Trusty	14.04 (LTS)	deb https://apt.dockerproject.org/repo ubuntu-trusty main
Wily	15.10	deb https://apt.dockerproject.org/repo ubuntu-wily main
Xenial	16.04 (LTS)	deb https://apt.dockerproject.org/repo ubuntu-xenial main

• Add repo to docker.list.

$ echo "<REPO>" | sudo tee /etc/apt/sources.list.d/docker.list

• After create docker.list, update apt-get

$ sudo apt-get update

• Check the instalation.

$ sudo apt-cache policy docker-engine

Prerequisites by Ubuntu Version

1. Ubuntu Xenial 16.04 (LTS), Wily 15.10, Trusty 14.04 (LTS)..

   • For Ubuntu Trusty, Wily, and Xenial, install the linux-image-extra-* kernel packages.

   • To install the linux-image-extra-* packages:.

   • Open a terminal on your Ubuntu host.

• Update your package manager.

$ sudo apt-get update

• Install the recommended packages.

$ sudo apt-get install linux-image-extra-$(uname -r) linux-image-extra-virtual

---

1. Ubuntu Precise 12.04 (LTS)

   • For Ubuntu Precise, Docker requires the 3.13 kernel version. If your kernel version is older than 3.13, you must upgrade it.
   • Refer to this table to see which packages are required for your environment:

• Update your package manager.

$ sudo apt-get update

• Install both the required and optional packages.

$ sudo apt-get install linux-image-generic-lts-trusty

• Reboot your host to use the updated kernel.

$ sudo reboot

Install the latest version

Make sure you have satisfied all the prerequisites, then follow these steps.

Note: For production systems, it is recommended that you install a specific version so that you do not accidentally update Docker. You should plan upgrades for production systems carefully. Log into your Ubuntu installation as a user with sudo privileges.

• Update your APT package index.

$ sudo apt-get update

• Install Docker.

$ sudo apt-get install docker-engine

• Start the docker daemon.

$ sudo service docker start

If you need run Docker without sudo

Command line

sudo usermod -aG docker $(whoami)

or

sudo usermod -aG docker username

Try run the "Hello World"

$ sudo docker run hello-world

Output...

Hello from Docker.
This message shows that your installation appears to be working correctly.
...