IOTstack tutorial : local image reversion
One of the main advantages of running services in Docker containers is the relative ease of reverting to the last-known-good container.
One of the biggest problems with reverting to the last-known-good container arises if you don't already know the tag of the image you want to revert to. Sometimes it can be a bit tricky to figure it out. You usually need to go to the container's "tags" page on DockerHub, sort through the update history for your architecture, pick the appropriate tag, edit your compose file to specify that tag, and then, in the words of the old Knight in the third Indiana Jones movie, hope that you have "chosen wisely".
Your chances of choosing wisely are inversely proportional to the amount of panic you're feeling after you realise a key container isn't working and reverting is your best strategy. Panic is the enemy of clear thinking and reasoning.
There is, however, another way. The method described here means you retain the last-known-