Sabayon Builder: a Docker Project

Attention! It's under strong development

State: Alpha

The purpose of this project is to provide an image of Sabayon docker-capable builder. It is just a Sabayon base with upgrades and compilation tools.

Images are also on Docker Hub sabayon/builder-amd64

First steps on docker

Ensure to have the daemon started and running:

sudo systemctl start docker

Building sabayon-spinbase locally

git clone https://github.com/mudler/docker-sabayon-builder-amd64.git docker-sabayon-builder
cd docker-sabayon-builder
sudo docker build -t sabayon/builder-amd64 .

Pulling sabayon-spinbase from Docker Hub

sudo docker pull sabayon/builder-amd64

Converting the image from Docker to use it with Molecules

Only with undocker, without squashing the layers

After pulling the docker image, install undocker and then as root:

docker save sabayon/builder-amd64:latest | undocker -i -o spinbase sabayon/builder-amd64:latest

Using docker-squash

You can also squash the image with docker-squash and then extract your layers.

sudo docker save sabayon/builder-amd64:latest | sudo TMPDIR=/dev/shm docker-squash -t sabayon/builder-amd64:squashed > /your/prefered/path/Spinbase.tar

You can replace /dev/shm with your prefered tmpdir

With undocker, but squashing the layers

The squash can also been accomplished creating a container from the image, exporting it and then importing it back.

sudo docker run -t -i sabayon/builder-amd64:latest /bin/bash
$ exit # You should drop in a shell, exit, you should see a container id, otherwise find it :
sudo docker ps -l
sudo docker export <CONTAINER ID> | docker import - sabayon/builder-amd64:squashed
docker save sabayon/builder-amd64:squashed | undocker -i -o spinbase sabayon/builder-amd64:squashed

Docker will loose the history revision and then you can estract the layer, using as base for chroot.

You now have the tree on the spinbase/ directory

If you are planning to use the resulting files as a chroot, don't forget to set a nameserver on resolv.conf file

echo "nameserver 208.67.222.222" > spinbase/etc/resolv.conf

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