If you’ve got your configs stored in git repos (even locally) you can set up renovate to scan for updates, you can even pin on hashes

Here is the most used fork for anyone intrested and a few thoughts on other tools:

I tried the mentioned Whats up docker and Diun (docker image notifier), but was not satisfied with both.

Nowadays I use Komodo, it uses basicly docker compose with a very nice web UI and it can do autopolling, notification or auto update itself. It is a very powerful tool and even replaces Portainer.

I just stumbled on this and read the first paragraph. Why is this shit and his is it not a container feature?

I miss when Docker was putting out new features for containers instead of this shit.

Thanks. I did create a persistent volume, but I thought that deleting the files would trigger them to be recreated when the container restarts.

Hâve you made a persistent volume for /etc/nginx (or any of its subdirectories) ?

IIRC, the templates are interpolated/copied on container start if the resulting configs do not exist already. Having a persistent volume would cause the issue you're experiencing

SOLUTION: The log file is definitely changing the case of the variables as they appear in .conf 😅.

Thank you

Setup a test environment, with all the bits you need and point your updated image at it.

For example I build an image that needs redis, so I have a test compose that starts redis and then my image

If it's peace of mind that you're after, you can never go wrong with a backup.

thanks a lot I will definitely check on that

I use swag, which is a pre-configured nginx with hundreds of sample configs for a lot of docker apps. It also has certproxy installed for letsencrypt and some added security. Worth looking at, imho.