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Cake day: August 3rd, 2023

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  • excitingburp@lemmy.worldtoSelfhosted@lemmy.worldWhat's the deal with Docker?
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    10 months ago

    For your use case, consider it to be a packaging format (like AppImage, Flatpak, Deb, RPM, etc.) that includes all the dependencies (including services, not just libraries) for the app in question.

    Should I change this?

    If it’s not broken don’t fix it.

    Use Podman (my preferred - the SystemD approach is awesome), containerd, or Incus. Docker is a graveyard of half-finished pet projects that have no reason for existing. Podman has a Docker-compatible socket, so 100% of Docker tooling will work with it.















  • It’s incredibly unlikely that there will ever be a vaccine or cure. Prions aren’t a disease like others, put in layman terms they are anti-life.

    It’s like all the healthy proteins in your body are balancing on a tight rope 10 stories into the air. Prions are what happens when the proteins fall off: the proteins fall to a ground state where they are incredibly stable. Moving them back up would be as difficult as sending lightning back up to the sky, or unbaking a cake. That’s why you need to burn them at 600C, they are so stable that they don’t even want to react with oxygen. They are like nature’s own forever-chemical.


  • Don’t learn Docker, learn containers. Docker is merely one of the first runtimes, and a rather shit one at that (it’s a bunch of half-baked projects - container signing as one major example).

    Learn Kubernetes, k3s is probably a good place to start. Docker-compose is simply a proprietary and poorly designed version of it. If you know Kubernetes, you’ll quickly be able to pick up docker-compose if you ever need to.

    You can use buildah bud (part of the Podman ecosystem) to build containerfiles (exactly the same thing as dockerfiles without the trademark). Buildah can also be used without containerfiles (your containerfiles simply becomes a script in the language of your choice - e.g. bash), which is far more versatile. Speaking of Podman, if you want to keep things really simple you can manually create a bunch of containers in a pod and then ask Podman to create a set of systemd units for you. Podman supports nearly all of what docker does (with exception to docker’s bjorked signing) and has identical command line syntax. Podman can also host a docker-compatible socket if you need to use it with something that really wants docker.

    I’m personally a big fan of Podman, but I’m also a fan of anything that isn’t Docker: LXD is another popular runtime, and containerd is (IIRC) the runtime underpinning docker. There’s also firecracker or kubevirt, which go full circle and let you manage tiny VMs like containers.