this post was submitted on 01 Jun 2023
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It's "annoyingly hard" because you're not using modern tooling. If Docker is unavailable on your preferred OS, then that OS is stuck in the past. Simple as that.
Docker makes it easy to install a program, including all its dependencies, in a repeatable way. Since you're familiar with BSD, it's similar to jails except with better isolation, fewer security holes/issues, and the software you want to run is preinstalled. Docker containers are essentially mmutable which makes upgrades easy - just throw away the old container and replace it with the new version. (persistent files are stored separately, in "volumes")
You can of course manually install the same software by looking at the Dockerfile and manually performing the same steps, but there's no guarantee that it'd work well on an unsupported OS.
Calling Docker "modern" is a stretch, as it's not much more than glorified Solaris Zones, but please enlighten me: Which feature of a federated web application requires modern tooling?
OpenBSD does not have jails.
How so?
Actually, not using Docker prevents a number of security holes/issues.
If you grab an image with it. You could as well just grab a tar archive with it... with less side effects.
And security patches impossible.
And yet the OS you're using doesn't support it. Hmm.
Sorry, I didn't realise that these are FreeBSD-specific (I guess? I'm not too familiar with BSD)
Deployment. All web apps and APIs are moving towards containerization - Docker for smaller scale deployments, and Kubernetes for large-scale deployments.
I didn't think jails had CPU, memory, or process limits similar to what
cgroup2
provides, but it looks like this functionality was added to FreeBSD at some point. Sorry for the incorrect information.Sure, Docker has had a few issues, but overall it's more secure to run your apps in Docker containers. If an app gets compromised, the attacker will generally be stuck inside the Docker container rather than getting access to your entire system. If you're worried about (very rare) container escape security holes, using unprivileged containers helps - You can run the app inside the container as an unprivileged user, and you can also run the entire Docker container as an unprivileged user on the host system.
Security patches are easier than if you used a tar archive to install the software. With a tar archive you threw into
/opt
or whatever, the app and its config/data are often stored together, so you need to be mindful of things like not overriding customized config files. Since Dockers containers are immutable and all the actual data is stored elsewhere, it's always safe to delete the container and replace it with a patched version.