Provide an AppImage for Linux

Carried over from https://github.com/brave/browser-laptop/issues/10250

Description

I would like to try out your browser but without letting it change repositories or libraries in my system.

Providing an AppImage would have, among others, these advantages:

• Applications packaged as an AppImage can run on many distributions (including Ubuntu, Fedora, openSUSE, CentOS, elementaryOS, Linux Mint, and others)
• One app = one file = super simple for users: just download one AppImage file, make it executable, and run
• No unpacking or installation necessary
• No root needed
• No system libraries changed
• Works out of the box, no installation of runtimes needed
• Optional desktop integration with appimaged
• Optional binary delta updates, e.g., for continuous builds (only download the binary diff) using AppImageUpdate
• Can optionally GPG2-sign your AppImages (inside the file)
• Works on Live ISOs
• Can use the same AppImages when dual-booting multiple distributions

Here is an overview of projects that are already distributing upstream-provided, official AppImages.

If you are interested, I am happy to help you make it happen. Just let me know.

Latest status

@posix4e has set this up for browser-laptop; it was never officially released though

[azubieta]

Added to my TODO

[hcsubser]

@hcsubser added this recently https://github.com/hcsubser/Brave-AppImage and there’s one release there

There is now a better unofficial appimage of brave at: https://github.com/srevinsaju/Brave-AppImage which is also fully automatic but covers all versions and not just bleeding edge versions of brave like mine