* Cache dependencies on CI workflow
* Use available fontforge version for CI action
Avoid a dirty OS upgrade to get a newer version of FontForge,
use what is available at Ubuntu 20.04
* Upgrade CI Workflow
By using an appimage of FontForge, it's easier to install the latest version, to cache it, and there is no extra dependencies clashes with Ubuntu 20.04
* Make paths for fontforge absolute in makefile
It's necessary because fontforge is an AppImage and requires it
* Improve cache step on CI
wget don't download a duplicate if file already exists
* Generate base64 ascii encoded debug keystore
That can be used to transfer the keystore to a Github Secret
* Restore debug.keystore from github secrets
Get the asc encoded keystore from github secrets,
and decode it back to a bynary file inside the CI run.
* Cleanup redundant lines and add explanation comment
* runs-on ubuntu-latest
Co-authored-by: Jules Aguillon <jules@j3s.fr>
* add *.keystore.asc to .gitignore
* Clean up lines, adjust documentation
* use CURDIR automatic makefile variable
Co-authored-by: Jules Aguillon <jules@j3s.fr>
