AppImage breaking when opened using an AppImage installer app. (Fix provided)

[brotenet]

Hello Kil0bit,

Btw, big fan of your show! keep up the great work 😃

I downloaded the KB-Invoice AppImage and tried to install it using kem-a's AppManager (https://github.com/kem-a/AppManager) so that can auto-update it when new versions are out, but (like many other AppImages) it breaks when opened by an AppImage manager app.

I am sending you my script project that I use for building my own AppImages into fully compatible packages with AppImage package manages and also takes care of adding the GitHub website and releases URLs for auto updating.

The "buld_latest.sh" script takes care of creating the required directory structure for the AppImage build as well as downloading the AppImageTool app and building the AppImage itself.
All you need is:

1. To have the zsync tool installed (e.g. "sudo apt-get install zsync" for ubuntu/debian ...)
2. To put all you app binaries and resource files in the "build" directory (from this .zip archive)
3. To put a .png icon image in the root directory of the extracted image.
4. Edit the "run" file to add the commands for starting your app
5. Edit the "buld_latest.sh" to set you app name, icon image file name, version, .desktop filename and set you GitHub repository URL.

This script creates an AppImage that is compatible with AppImage updtater tools such as kem-a's AppManager (https://github.com/kem-a/AppManager)

AppImage_Build_Script.zip

Hope this could be helpful to you as well.
Let me know if you need help with adjusting it to your needs.