@Alex789 Well, I'm an idiot. I used the wrong container template in Proxmox. Low and behold, using the Ubuntu container and everything works now. Thank you!

@Alex789 The sudo command doesn't work, I presume because I'm logged in as the root user (line 1-2), so I did it without sudo and the rest is the output. Had to add spaces to the URL's in the post so...

@Alex789 I'll be honest and say that I'm not entirely sure -- I'm extremely green with Linux, coming from a Windows background and was just following the TP Link guide. I haven't done anything other...

@LucianoR Thanks for the updates! I've been trying for a few hours and keep running into issues. Trying to use an Ubuntu 20.0.4 container in Proxmox sudo apt -y install openjdk-8-jre-headless Gives...