docker-ubuntumirror/README.markdown

sneak/ubuntumirror

Docker container for syncing trusty and xenial ubuntu LTS mirrors to reduce network traffic and speed up build times.

I recommend deploying this with a --dns 172.17.0.1 in your /etc/default/docker and dnsmasq bound to 172.17.0.1:53 to rewrite archive.ubuntu.com to 172.17.0.1 (which this image will be listening and serving on).

Then even your builds (where you can't specify links) will go fast.

Levers

• MIRROR_ARCHITECTURES
  • default amd64.
  • You may want i386,amd64.
• MIRROR_CATEGORIES
  • default main,universe.
  • You may want main,universe,restricted,multiverse. Will use lots of disk.
• UBUNTU_MIRROR_SOURCE
  • default archive.ubuntu.com.
  • You may want xx.archive.ubuntu.com (where xx is your country code).
• MIRROR_INTERVAL_SECONDS - mirror sync interval
  • default 43200 (12h)
  • You may want 10800 (3h)

Example dnsmasq setup

apt-get update && apt-get -y install dnsmasq
cat > /etc/dnsmasq.d/docker <<EOF
no-resolv
server=8.8.8.8
server=8.8.4.4
EOF
echo "172.17.0.1 archive.ubuntu.com" >> /etc/hosts
service dnsmasq restart

Then, just add --dns 172.17.0.1 to your /etc/default/docker opts and bounce the docker daemon. Future containers will talk to your local mirror.