How to update Ghost with Docker

So round rolls the time of year again where I remember I have a blog and would you look at that the folks over at Ghost have released a new version.

However, I can't remember how to upgrade my site easily to the new version. That is why this blog post now exists, so assuming you have a persisted volume, the following is the solution.

Firstly pull the latest docker image

docker pull ghost

Stop the existing container

docker container stop mycontainername

Re-create the container using your existing command you used to run it originally

docker run -d -p 443:443 -e url=https://example.com --name mycontainername -v ghost-data:/var/lib/ghost/content ghost

Thats it, the container should now be running and pointing at your existing data. You will just need to login to the ghost admin to complete the upgrade.