My droplet uses Ubuntu 15.04 and docker.io 1.5.0. The highest version of docker.io available is 1.6.2. I see various ways to update docker and am afraid to experiment for fear of losing my data container in the process. What is the best way to update to docker >= 1.7 and ensure containers are not lost?
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I went ahead and exported my data container to be safe before trying to solve this.
docker export my_data_container > my-backup.tar
Here’s what I did to update:
service docker stop
apt-get remove docker.io
wget -qO- https://get.docker.com/ | sh
service docker start
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