The Docker package is installed with
sudo apt-get install docker.io
and the loic user is made part of the docker group to allow it to run containers.
$ grep docker /etc/group docker:x:142:loic
The most popular ubuntu image collection reported by
$ docker search ubuntu | head -2 NAME DESCRIPTION STARS ... ubuntu Official Ubuntu base image 715 ...
is pulled locally with
docker pull ubuntu
A container is created from the desired image (as found by docker images) is selected with:
docker run -v /home/loic:/home/loic -t -i ubuntu:14.04
the home directory is mounted into the container because it contains the local Ceph clone used for development. The user loic is recreated in the container with
adduser loic
and the necessary development packages are installed with
apt-get build-dep ceph apt-get install libudev-dev git-core python-virtualenv emacs24-nox ccache
The state of the container is saved for re-use with
$ docker ps CONTAINER ID IMAGE ... 2c694d6d5f90 ubuntu:14.04 ... $ docker commit 2c694d6d5f90 ubuntu-14.04-ceph-devel
Ceph is then compiled and tested locally with
cd ~/software/ceph/ceph ./autogen.sh ./configure --disable-static --with-debug \ CC='ccache gcc' CFLAGS="-Wall -g" \ CXX='ccache g++' CXXFLAGS="-Wall -g" make -j4 make check