Is it safe to automatically pull and update docker containers?
Hello! I was wondering if running periodically a script to automatically pull new images for all my containers is a good or a bad idea. I'd run it everyday at 5.00AM to avoid interruptions. Any tips?
EDIT: Thanks to everyone for the help! I'll install Watchtower to manage the updates
But from the moment that the script updates and breaks something and the moment he realizes it may be too late for some applications.
For example I host Traccar to track car/vans and in this case some tracks would be lost. Or maybe SyncThing, he may realize days/weeks later that a sync is not working and if he was synching his smartphone pictures with his server and the smartphone is lost/broke/stolen, he may lose days/weeks or even months of pictures.
I wouldn't trust a script. Use Watchtower or What's up Docker
That's why you you bind mount all the important data and back it up with a proper backup solution like borg. And why you also have a monitoring and notification system that alerts you if a service goes down. I will get a telegram message within 15 minutes of a service going down.
I do bind mount data folders of the containers, I do backups, I have a notification system that alerts me if a container is not up, but a container can be up but have problems and, most importantly, I (and I guess a lot of other people) don't always have time to solve problems. When I a few spare minutes a do a snapshot, I update the containers and if something goes wrong if I have time I troubleshoot it, otherwise I just roll back the snapshot and I'll have a look at the problem when I'll have time.