This video walks through installing Terraform on Linux Mint both through downloading the binary manually and adding to Terraform Repository.
Links shown in this video are:
https://developer.hashicorp.com/terra...
and
https://docs.docker.com/engine/instal...
The commands executed to add the gpg key and repository are:
curl -fsSL https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/hashicorp-archive-keyring.gpg
echo "deb [signed-by=/etc/apt/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com jammy main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
sudo apt update && sudo apt install terraform