Docker Install and Uninstall on Ubuntu 16.04.2

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Introduction

When you install docker form ubuntu source, you may cannot install the lasted version. It may lead to you cannot implement your environment or have a error when you running your project.

This article will show you how to uninstall  and install the lasted version docker on Ubuntu Linux 16.04.2.

For more information, please read the offical website.

Uninstall old versions

Before install the lasted version, let’s uninstall the old version.

Running command:

sudo su

apt-get remove docker docker-engine docker.io

Remove old version docker

Install Repository

After uninstall old version, now let’s install repository. First, we update our APT. Please make sure all following command is running on the root user. If you get message that tell you “Permission denied“. This means that you do not user root user to run the command or do not switch to root user. When you receive this error message, you can run command: sudo su to switch to root user. (This command may ask you to input your password)

sudo apt-get update

Then, we install following packages.

apt-get install \
apt-transport-https \
ca-certificates \
curl \
software-properties-common

Then, we add GPG Key.

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

After install the key, we verify the fingerprint, make sure that it is correct. The correct fingerprint should be:

9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88

sudo apt-key fingerprint 0EBFCD88

Install Docker

Now, let’s install the lasted version (stable version).

First, we add the repository. After adding the repository, we update our APT.

sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"

apt-get update

Finally, we install it via apt-get.

sudo apt-get install docker-ce

Testing

Now, let’s testing that it is working or not by using following command:

docker run hello-world

If we install correctly, it will show the hello message, and then print information, and finally, exit.

Testing Docker

Summary

Now, we finish the installation. You can run your project on your Ubuntu Linux. Recently, I will try to build a vulnerability environment based on it. And hopefully, I can finish it on next week. If you have any question, please let me know. I will answer you ASAP.