Add Ubuntu Bionic builder for librist

This PR adds a basic Ubuntu Bionic builder for the librist project at https://code.videolan.org/rist/librist. It is based on dav1d's Bionic image.

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• b67b0076 - Add Ubuntu Bionic builder for librist

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mentioned in merge request rist/librist!16 (merged)

Hi James,

Thanks for your contribution. Maybe it's easier to just use a focal image instead of adding focal repos if we need those specific versions of packages?

Sure, I can do that. I took that part from the dav1d dockerfile so might be worth updating that one as well. Will update the PR with a new commit shortly.

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• e575092a - Remove focal reqs

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Alright I gave focal a try and it seems like they've made some unfortunate decisions wrt snappy so i just removed the focal parts and this is just bionic now.

Thanks! Why do you install cmocka from the sources, wouldnt https://packages.ubuntu.com/search?keywords=libcmocka0 be enough? 18.04 has 1.1.1.

It's mainly an artifact of when I was trying to get around using a custom image for librist. Building from source doesn't add a ton of extra time, but happy to change it to an apt install if it's preferred.

Yep, it's better to use distros packages. Is that just a libcmocka-dev that is needed? I can fix that now when I push.

That I am not certain, maybe both libcmocka-dev and libcmocka0

libcmocka-dev has a hard dependency on libcmocka0, so it can be skipped on the install line. I'm going to push the fix now.

Perfect, thanks.

Seems like gitlab didnt pick up the butchered patch, but anyway, the results are in registry.videolan.org/librist-ubuntu-bionic:20200501213126 image which can be used now.

Thanks!

closed

Beautiful thanks for your help here, I'll give it a spin in the morning.