I'm looking for reliable methods to automate the updating of Docker containers, particularly since I have a dedicated device in my Homelab for Docker. I've come across some outdated threads and a closed GitHub project that haven't provided clear solutions. In 2026, what's the optimal way to handle updates? Do I need to manually back up settings and create new containers from a Dockerfile each time? I need an effective workflow that ensures my media containers, which get updated frequently, stay secure without the risk of failed updates. How can I manage this using Portainer?
4 Answers
A solid approach is to create a snapshot of your volume before updating. You can use Dockhand to manage updates for selected containers or all at once. This gives you a layer of protection.
It's important to be cautious when updating containers. While going through your stack every few months for updates is one approach, certain containers require more frequent attention. It's safer to regularly check for updates instead of setting a fixed schedule.
I highly recommend using WUD (What's Up Docker) for automatically updating your Docker compose stacks. Just be sure to stick to a specific pinned version. Also, avoid modifying Dockerfiles; instead, pulling new versions and replacing the old ones is the way to go, especially since using volumes helps maintain your data integrity.
Watchtower is still a reliable option for automating updates! I manage around 30 containers with it by dividing them into two groups: those that can auto-update and those that need manual intervention. I use Watchtower with labeled containers and have WUD notify me about updates for sensitive ones. This way, I can keep track and switch back quickly if an update causes problems.
Related Questions
Can't Load PhpMyadmin On After Server Update
Redirect www to non-www in Apache Conf
How To Check If Your SSL Cert Is SHA 1
Windows TrackPad Gestures