Use dockcross for wheel builds
See other discussion on !7058 (merged) for other changes.
The following discussion from !7058 (merged) should be addressed:
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@jcfr started a discussion: (+1 comment) dockcross/manylinux2010-x64
Let's use the dockcross image, @thewtex and I are maintaining them and they are updated to always have the latest CMake, ninja with jobserver support,
Cc: @tjcorona