Big thanks to https://earthly.dev/blog/creating-and-hosting-your-own-deb-packages-and-apt-repo/
Live system at pkg.julian-lemmerich.de/deb
sudo apt-get install -y dpkg-dev gpg
Start at Step 2, i already have built .deb packages
~ is root of webserver, like pkg.julian-lemmerich.de
This Folder (~/deb/pool/main/) contains all the packages. Create subfolder for the packages for easier management. Like ./i/ical-relay/
Add a new debian file to the ~/deb/pool/main/<letter>/<package> and then
Run the script from https://github.com/jm-lemmi/apt-repo. apt-repo.sh <file.deb> <stable/testing>
The filename here is not a relative path, but just the filename.
echo "deb [arch=amd64] http://pkg.julian-lemmerich.de/deb stable main" | tee /etc/apt/sources.list.d/jm-lemmi.list curl http://pkg.julian-lemmerich.de/deb/gpg.key | apt-key add - apt update apt install ical-relay
The paths in Packages are relative paths!