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Cake day: June 26th, 2023

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  • CodeBlooded@programming.devtoSelfhosted@lemmy.worldWhat is Docker?
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    3 months ago

    Docker enables you to create instances of an operating system running within a “container” which doesn’t access the host computer unless it is explicitly requested. This is done using a Dockerfile, which is a file that describes in detail all of the settings and parameters for said instance of the operating system. This might be packages to install ahead of time, or commands to create users, compile code, execute code, and more.

    This instance of an operating system, usually a “server,” is great because you can throw the server away at any time and rebuild it with practically zero effort. It will be just like new. There are many reasons to want to do that; who doesn’t love a fresh install with the bare necessities?

    On the surface (and the rabbit hole is deep!), Docker enables you to create an easily repeated formula for building a server so that you don’t get emotionally attached to a server.




  • While they do rely on COBOL and old mainframes a great deal, that isn’t the only software supporting the company and its operations. That fact doesn’t negate what I’m speculating would be the cause.

    These big banks have multiple programming teams that use different programming languages and work on different products.

    If you go to their careers page, you will find tons of Java, .NET, and Python jobs posted. I’ve never seen a COBOL posting at a big bank (which doesn’t mean it’s never happened, but I can see any of these more modern languages posted any given day).








  • First thing: Ubuntu is the right choice. As far as I’m aware, having run Linux as my main desktop OS for almost a decade and playing with several flavors (…which includes Arch btw 😎), it’s the most polished out of the box desktop experience for someone completely new. It will also likely be the OS with the most Q&A existing on the web for problems you won’t be the first to have encountered.

    Secondly, and maybe this should be first, and it sounds like you’ve already got this part down: you have to want to do this. Linux is just not mainstream for the majority of desktop computer users. If you’re not really wanting to do this, you’ll be frustrated when this isn’t the same experience as Windows. (but it sounds like you’re sick of the Windows experience. That’s what started me into Linux years ago.)

    Lastly, as far as my quick Lemmy comment goes: Embrace the terminal! You can get around for a while as a Linux n00b on Ubuntu without opening that terminal, but at the end of the day, the *nix shell commands are what make working with Linux great.

    The switch will take time. You’ll occasionally need to look up how to do stuff that may have felt simple in Windows… and that will usually be installing and running software that targets Windows only. However, the support for that sort of stuff gets better and better with time. Wine🍷 has come a long way.

    It’s worth the journey IMO. For me, I was a PC gamer and I jumped straight into Linux with 0 experience. I learned a lot, spending a lot of time trying to make my Windows games run on Linux. Friends at LAN parties would joke about how I’d spend half the LAN party trying to get my games to run right.

    The jokes were a good laugh, but my career shifted since then and my Linux experience carried right over into software development. Everything I deploy is on Linux servers or in Docker containers. All those years fooling around and tinkering with Linux as a PC gamer were loading me with experience that people would pay me for one day.

    Good luck! 🐧