How to upgrade Docker in Ubuntu

How to upgrade Docker in Ubuntu

Abstract: In the article "experience DigitalOcean VPS cloud service", we have built a Ubuntu 14.04 VPS operating system environment, and use the Docker package (docker. i/O) after Docker is installed, but the installed version is 1.0.1, some new features are unavailable (for example, docker exec). This article records the latest Docker upgrade method.

First Installation Method: (apt-get)

1. Apt-get install-y docker. io
2. Ln-sf/usr/bin/docker. io/usr/local/bin/docker
3. Sed-I '$ acomplete-F _ docker'/etc/bash_completion.d/docker. io

Installed version:

Update method: (to install the latest version from the Docker official source, first install apt-transport-https and add the Docker official source)

1. Sudo apt-get install apt-transport-https
2. # Add the Docker repository key to your local keychain
3. Sudo apt-key adv -- keyserver keyserver.ubuntu.com -- recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9
4. # Add the Docker repository to your apt sources list.
5. Sudo sh-c "echo deb https://get.docker.io/ubuntu docker main>/etc/apt/sources. list. d/docker. list"
6. # Update your sources list
7. Sudo apt-get update
9. # Run the following command to install the latest docker version:
10. Apt-get install-y lxc-docker
11. # Update later:
12. Apt-get update-y lxc-docker
14. Ln-sf/usr/bin/docker/usr/local/bin/docker

Version information after upgrade: