I've been doing Linux server administration for 20 years now. You'll always have to duckduckgo things. You'll never keep it all in your head, even just a single server with a handful of services. Docker and containers really isn't too hard. Just start small and build from there. If you can learn how the chroot command works, you've pretty much learned docker. It's just chroot with more features.
Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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Yep same here. Professional IT for over 25 years. Nobody knows everything. It’s ok to fail. Just keep swimming. And when you do get something working…. that high is unbelievable. It’s like a drug addiction and will drive you to do more and more. Good luck!!!