Upgrade base to 22.04 and add koremarkable-aarch64

[NoaHimesaka1873]

20.04 is now gone :( RIP

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This change is 

[benoit-pierre]

20.04 is not gone: it's getting phased out as a supported runner on Github Actions, but we can still use our docker image.

[benoit-pierre]

Anyway, if we do switch to 22.04 (which might not be a good thing for our AppImage compatibility with older systems), then the code in baseimage-22.04/xxx needs to be brought up-to-date: basically to copy what's done for baseimage-20.04.

As for remarkable-pro|aarch64 support, do we really want a new dedicated image? Or should we just add the toolchain to the koremarkable image (like it's done for kokindle, which includes our 4 kindle toolchains).

[Frenzie]

Or should we just add the toolchain to the koremarkable image (like it's done for kokindle, which includes our 4 kindle toolchains).

That's probably easier to deal with. 👍

[NoaHimesaka1873]

Yeah it should be merged into remarkable image. Will edit asap.

[benoit-pierre]

No need: #118 will update the baseimage, I'll update the derived images after, hopefully with a new koxtoolchain release once koreader/koxtoolchain#52 gets sorted.

[NoaHimesaka1873]

Closed.