Docker - howto

Some notes on install/usage

• From: https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-getting-started

sudo aptitude install linux-image-extra-`uname -r`
sudo sh -c "wget -qO- https://get.docker.io/gpg | apt-key add -"

sudo sh -c "echo deb http://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list"

sudo aptitude    update
sudo aptitude install lxc-docker

## Change DEFAULT_FORWARD_POLICY="DROP" -> DEFAULT_FORWARD_POLICY="ACCEPT"
sudo vim /etc/default/ufw
sudo ufw reload

## On linux mint, install apparmor or docker will not start
sudo aptitude install apparmor

## Add user to docker group to avoid using sudo
sudo gpasswd -a martin docker

## Login to a running docker (bash)
docker exec -it <CONTAINER_ID> bash

Mariadb

Followed some of the stuff from this howto:

• http://amattn.com/p/installing_maria_db_mysql_with_docker.html

Apache

More info:

• http://slopjong.de/2014/09/17/install-and-run-a-web-server-in-a-docker-container/

Various tips

Change default storage location

Change default storage location of docker image files:

# Edit /etc/default/docker and add -g like:
DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4 -g /mnt/docker-images"

Restart docker

Dirty quickie to install latest docker

This involves trusting/running a script from an unknown origin!

apt-get update; apt-get install -y curl; curl -sSL https://get.docker.com/ | sh