multiarch image

[pheel]

This adds support for arm64 in the pre-built image.

[codecov]

Codecov Report

Merging #297 (3a37aba) into master (f982837) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #297   +/-   ##
=======================================
  Coverage   87.46%   87.46%           
=======================================
  Files          26       26           
  Lines        1946     1946           
=======================================
  Hits         1702     1702           
  Misses        244      244           

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[gilesknap]

Thanks!