Upgrading Docker


Dockercon #2 is underway, version 1.7.0 of Docker was released at the end of last week, and lots of other new toys are being launched. Time for some upgrades.

I got used to Docker always restarting containers when the daemon restarted, which included upgrades, but that behaviour went away around version 1.3.0 with the introduction of the new –restart policies

Here’s a little script to automate upgrading and restarting the containers that were running:


datenow=$(date +%s)
sudo docker ps > /tmp/docker."$datenow"
sudo apt-get update && sudo apt-get install -y lxc-docker
sudo docker start $(tail -n +2 /tmp/docker."$datenow" | cut -c1-12)

I also ran into some problems with Ubuntu VMs where I’d installed from the old docker.io repos that have now moved to docker.com.

I needed to change /etc/apt/sources.list.d/docker.list from:

deb http://get.docker.io/ubuntu docker main


deb https://get.docker.com/ubuntu docker main

The switch to HTTPS also meant I needed to:

apt-get install apt-transport-https

One Response to “Upgrading Docker”

  1. 1 Upgrading Docker Redux | Chris Swan's Weblog

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: