docker-build: create multi-arch image amd64,arm64

[andrewkroh]

Use docker buildx to produce a multi-arch image that can run natively on linux/amd64 and linux/arm64.

Sanitize the branch name because it is used as a docker tag. Special characters need to be removed.

Closes #77

References

• https://docs.docker.com/reference/cli/docker/image/tag/
• https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html

[elasticmachine]

:green_heart: Build Succeeded

• Buildkite Build
• Commit: 277502e4aea1dfabb8e7740daf62a6037c32ca24

History

• :green_heart: Build #73 succeeded b68216be08e1475308d3fa4466417205e350693e
• :broken_heart: Build #72 failed a18a1dce93f3242cbdbd6bf0a1e7c5a3abe4180e
• :broken_heart: Build #69 failed fea28b5683f0170c61a6b76d8e43c2823d1a34f0
• :broken_heart: Build #67 failed fea7e1a3a92715a8924c32a6b5a230c907d6854f
• :broken_heart: Build #66 failed 3daa28e0982a51a0839bf7534e0d7ed0e274125b
• :broken_heart: Build #65 failed ae46261601b4a1761e3a55cb700c3f9dd3b915e3