Not containers and data, but the images. The point would be reproducability in case a remote registry does not contain a certain image anymore. Do you do that and how?
You must log in or register to comment.
if there are some custom image, e.g. additional stuff I added to an existing image, then I backup the dockerfile. you can rebuild the image anytime and the size is smaller than a binary.
Came here to say that: the most economic solution is to backup any dockerfiles themselves, though that also has the caveat that any installs within the build steps might also depend on external resources that could also be dropped.
There are methods of adding a local caching layer between your system and external, which might be what OP is after, but that involves investing in the additional space needed to back them up
good point, I might do that over the weekend :D
I mean…you have the container right there on your machine. If you’re concerned, just run your own registry and push copies there when needed. This of course is all unnecessary, as you only need the Dockerfile to build a clean image from scratch, and it will obviously work if it’s already been published.
As long as the internet works and the image is still available.
Which is kind of the whole point, homie.
Again, it’s nearly impossible to scrub the entire internet of the code to just run a single command and build a docker image of whatever you were running yourself. If you have the image locally, you can just push it anywhere you want.
Keep Dockerfile, keep checkouts of what you’re running, or push images locally. All very simple.
I used to but then I switched out the server I was doing backups to and have been thinking “I’ll get to it later” for many months. If anything goes wrong I’m screwed. I’ll get to it later ¯_(ツ)_/¯
I do run my own forgejo container repo, and I mirror containers I need there.
But I don’t backup my containers, just the data directories I mount to them.
I back up everything.
I’ve been looking to do this, but haven’t found a good, easy to use pull thru proxy for docker, ghcr.io and some other registries. Most support docker only.
This one looks promising but overly complicated to set up.
A few times now, I’ve gone to restart a container and the repo’s been moved, archived or paywalled. Other times, I’m running a few versions behind and the maintainer decided to not support it, but upgrading would mean a complete overhaul of my Helm values file. Ugh!
I was considering a docker registry on separate ports for each upstream registry I’d like to proxy/cache.
yes. all of the images I use are cached and stored in my locally hosted gitlab registry.
I think I’ve got around 120-140 images. a lot of what I have is just in case of an emergency.
I’ve always imagined I could build and run technological infrastructure after a social collapse or something, so I have a lot of images that could be a good basis to start with. Most OS images, popular DB images, etc. it would probably never work, but I’d rather have the option than not.