Add Dockerfile.arm32v6

[toolboc]

Add arm32v6 compatible docker image to support devices like Raspberry Pi 2/3 etc.

[linki]

Thank you @toolboc,

I'm currently building images automatically on quay.io which runs on Intel-backed instances, I assume. Can you change the Dockerfile so that it uses an x86-compatible image for cross-compiling the binary and then use the arm image only in the final step (similar to building for PowerPC: https://github.com/linki/chaoskube/blob/master/Dockerfile.ppc64le)

I'm not an expert in this so please let me know if you have a better idea.

[linki]

@toolboc Image build still fails because the arm container also executes some commands.

I know it's not optimal but for now I would suggest to just put in the binary and leave out the chaoskube user as well as the dumb-init stuff (similar to https://github.com/linki/chaoskube/blob/master/Dockerfile.ppc64le).

At least this makes the image build. I think you can still run it as non-root by passing a uid at runtime (e.g. for powerpc: docker run -u 2000 quay.io/linki/chaoskube:v0.9.0-ppc64le --version).

[toolboc]

Is this ready for merge now?

[linki]

@toolboc Yes! Thanks a lot! Worked fine on my old rpi2 😄

[linki]

You can find the arm images here:

docker run quay.io/linki/chaoskube:v0.12.0-arm32v6 --help
docker run quay.io/linki/chaoskube:v0.12.0-arm64v8 --help