Based on: Installing .NET 6 on Ubuntu 22.04 (Jammy)
Using Jammy feed
sudo apt update && sudo apt -y install dotnet6
Use .NET 6 Package via PMC
The above didn’t work for me for some reason :/
wget https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
rm packages-microsoft-prod.deb
Configure apt preferences, to prioritize PMC repository:
sudo touch /etc/apt/preferences
With contents:
Package: *
Pin: origin "packages.microsoft.com"
Pin-Priority: 1001