I have read #1303, but I don't think my issue is a duplicate of it. AppImage is very convenient. As you can see, it's widely used for nightly builds. For example:
https://download.supertux.org/
If you provide a Docker image or some kind of easy setup to build a Geany AppImage we can integrate it. But since nobody of the active developers is using AppImages nor have experience, it's unlikely it will happen without contributions.
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