Step by step guide to update your Gravity instance
To update Gravity, follow these steps :
To not lose your data, make sure you have defined a volume as described in the "Installation" section.

Stop Gravity container

docker stop gravity

Delete Gravity container

docker rm gravity

Delete Gravity image

docker rmi $(docker images 'purplen/gravity' -a -q)

Download and start the latest version of Gravity

docker run -d -p 80:80 --name gravity purplen/gravity