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What's the deal with Docker? (lemmy.zip)
submitted 9 months 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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[-] matcha_addict@lemy.lol 33 points 9 months ago* (last edited 9 months ago)

This blog post explains it well:

https://cosmicbyt.es/posts/demistifying-containers-part-1/

Essentially, containers are means of creating environments in which you can run software, and those environments are:

  • isolated, which makes it a very controlled environment. Much harder to run into errors
  • reproducible: we have tools that reproduce the same container from an image file
  • easy to distribute: just have the container image.
  • little to no compromises on performance (at least on Linux)

It is essentially a way for you to run a program without having to worry how to set up the environment, why it didn't work as expected, what dependencies you're missing, etc.

this post was submitted on 11 Mar 2024
153 points (94.2% liked)

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