docker-jenkins.sh

UBUNTU_NAME='precise'
UBUNTU_VERSION='12.04'
CHEF_VERSION='10.26.0'
ARCH='amd64'

sudo debootstrap --arch=${ARCH} --variant=minbase ${UBUNTU_NAME} ${UBUNTU_NAME}-${BUILD_NUMBER}
snapshot0=$(sudo tar -C ${UBUNTU_NAME}-${BUILD_NUMBER} -c .|docker import -)
sudo rm -rf ${UBUNTU_NAME}-${BUILD_NUMBER}
cat > Dockerfile <<EOF
FROM ${snapshot0}
MAINTAINER Knewton "se@knewton.com"
RUN apt-get update
RUN apt-get install -qq wget
RUN wget http://www.opscode.com/chef/install.sh|bash -s -- -v ${CHEF_VERSION}
RUN mkdir -p /etc/chef /var/chef/cookbooks /var/chef/data_bags
RUN apt-get clean
EOF
docker build < Dockerfile > build.log
cat build.log
snapshot1=$(tail -n 1 build.log)
case "${#snapshot1}" in
    "12")
        docker tag $snapshot1 knewton/ubuntu-${UBUNTU_VERSION}
        docker tag $snapshot1 knewton/ubuntu-${UBUNTU_VERSION} ${BUILD_NUMBER}
        docker images
        ;;
    *)
        exit 1
        ;;
esac