Make sure curl is installed on the Ubuntu VM:
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:
sudo apt-add-repository "deb https://apt.dockerproject.org/repo ubuntu-xenial main"
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
