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Should I move to Docker? (lemmy.ca)

submitted 1 year ago by [email protected] to c/[email protected]

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I'm a retired Unix admin. It was my job from the early '90s until the mid '10s. I've kept somewhat current ever since by running various machines at home. So far I've managed to avoid using Docker at home even though I have a decent understanding of how it works - I stopped being a sysadmin in the mid '10s, I still worked for a technology company and did plenty of "interesting" reading and training.

It seems that more and more stuff that I want to run at home is being delivered as Docker-first and I have to really go out of my way to find a non-Docker install.

I'm thinking it's no longer a fad and I should invest some time getting comfortable with it?

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[–] [email protected] 5 points 1 year ago

Yes. Let me give you an example on why it is very nice: I migrated one of my machines at home from an old x86-64 laptop to an arm64 odroid this week. I had a couple of applications running, 8 or 9 of them, all organized in a docker compose file with all persistent storage volumes mapped to plain folders in a directory. All I had to do was stop the compose setup, copy the folder structure, install docker on the new machine and start the compose setup. There was one minor hickup since I forgot that one of the containers was built locally but since all the other software has arm64 images available under the same name, it just worked. Changed the host IP and done.

One of the very nice things is the portability of containers, as well as the reproducibility (within limits) of the applications, since you divide them into stateless parts (the container) and stateful parts (the volumes), definitely give it a go!