I host a variety of APT packages on my website.
The T-yopo repository is located at (site root)/pkg/tyopo. It is signed with my GPG key. (downloading it not available right now)
deb [signed-by=/etc/apt/keyrings/tyopo.gpg] http://(site root)/pkg/tyopo stable main
The Linux Mint mirror is located at (site root)/mirror/mint
deb [signed-by=/etc/apt/keyrings/mint.gpg] http://(site root)/mirrors/linuxmint/ zena main