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Get Ubuntu

Get the Ubuntu ISO image from ubuntu.com. The recommended version is 16.04.3 LTS (Long Term Support). You can use the server or , desktop edition. I used the server edition.

Get VirtualBox and VirtualBox Guest Additions

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In a VM terminal window, verify that you can access your home directory on the host computer, which should be mounted under here:

/media/sf_Users

Install Docker

Make sure curl is installed:

sudo apt update

sudo apt install curl

If you are behind a corporate firewall (replace "proxyhost:port" with your actual proxy information)

https_proxy="https://proxyhost:port" curl -fsSL https://apt.dockerproject.org/gpg | sudo apt-key add -

Otherwise:

curl -fsSL https://apt.dockerproject.org/gpg | sudo apt-key add -

Expected Response:

OK

Add the docker package repository:

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Install packages:

sudo apt update

sudo apt-cache policy docker-engine

sudo apt install docker-engine

sudo apt install docker-compose

If you are behind a corporate firewall, you will need to configure proxy settings for docker so that images may be obtained from internet repositories. In the commands shown here, replace "proxyhost:port", "yourdomain1.com", and "yourdomain2.com" with appropriate values.

Make the docker configuration directory:

mkdir -p /etc/systemd/system/docker.service.d

Edit (create) this file:

/etc/systemd/system/docker.service.d/http-proxy.conf

Add these lines:

[Service]
Environment="HTTP_PROXY=https://proxyhost:port"
Environment="HTTPS_PROXY=https://proxyhost:port"
Environment="NO_PROXY=localhost,127.0.0.1,.yourdomain1.com,.yourdomain2.com"

Restart docker:

sudo systemctl daemon-reload

sudo systemctl restart docker

Add yourself to the docker user group (replace "userid" with your user ID):

sudo usermod -a -G docker userid

Log out and log back in so that the user group change will takeeffect.

Verify that you can connect to docker as yourself (i.e. not as root):

docker ps

Verify that you can download and run the hello-world container

docker run hello-world

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