I’ve played with Docker a little in it early days but didn’t stick for longer with it. It’s stable now so I wanted to check how it’s running now.
I really can’t accept this method of installation:
curl -fsSL https://get.docker.com/ | sh
I think that world is going to it’s end when I see such scritps… I prefer to do this manually, knowing exactly what I have to do.
Install prerequisites:
apt-get update
apt-get install -y apt-transport-https ca-certificates
Purge old packages if you used them:
apt-get purge lxc-docker*
apt-get purge docker.io*
Add GPG key:
apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
Add repo - use ONLY ONE repo appropriate for your system (lsb_release -a to check):
echo "deb https://apt.dockerproject.org/repo debian-wheezy main" > /etc/apt/sources.list.d/docker.list
echo "deb https://apt.dockerproject.org/repo debian-jessie main" > /etc/apt/sources.list.d/docker.list
echo "deb https://apt.dockerproject.org/repo debian-stretch main" > /etc/apt/sources.list.d/docker.list
echo "deb https://apt.dockerproject.org/repo ubuntu-precise main" > /etc/apt/sources.list.d/docker.list
echo "deb https://apt.dockerproject.org/repo ubuntu-trusty main" > /etc/apt/sources.list.d/docker.list
Refresh repos and install Docker:
apt-get update
apt-get install -y docker-engine
Start service if it’s not running:
service docker start
Grant access to docker service for non-root user
I don’t like to use apps that require me to use root account. Docker even advice not to do so - service is running as root and you should add docker group and user to it to grant access to service socket:
groupadd docker
gpasswd -a ${USER} docker
service docker restart
Now logout, login again and and you should be able to use docker command:
docker version
docker info
docker run hello-world
Have fun 😃
Sources
https://docs.docker.com/linux/
https://docs.docker.com/engine/installation/