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What's the deal with Docker? (lemmy.zip)

submitted 2 years ago by AlexPewMaster@lemmy.zip to c/selfhosted@lemmy.world

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I never understood how to use Docker, what makes it so special? I would really like to use it on my Rapsberry Pi 3 Model B+ to ease the setup process of selfhosting different things.

I'm currently running these things without Docker:

Mumble server with a Discord bridge and a music bot
Maubot, a plugin-based Matrix bot
FTP server
Two Discord Music bots

All of these things are running as systemd services in the background. Should I change this? A lot of the things I'm hosting offer Docker images.

It would also be great if someone could give me a quick-start guide for Docker. Thanks in advance!

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[–] lemann@lemmy.dbzer0.com 4 points 2 years ago

Not exactly IMO, as containers themselves can simultaneously access devices and filesystems from the host system natively (such as VAAPI devices used for hardware encoding & decoding) or even the docker socket to control the host system's Docker daemon.

They also can launch directly into a program you specify, bypassing any kind of init system requirement.

OC's suggestion of a chroot jail is the closest explanation I can think of too, if things were to be simplified