Add Docker-based GCC Test tasks

Since we've moved compilation to a Debian10 Docker container, the
resulting binaries won't run on Debian9 unless we also run them in a
Debian10 Docker container.

Test-Debian10-GCC-GCE-CPU-AVX2-x86-Debug-All-Docker failures are
tracked in skia:9664.

Bug: skia:9632, skia:9664
Change-Id: I97edc142cf558e30d11bd7bc3b5d1b423ba2418b
Auto-Submit: Ben Wagner aka dogben <>
Commit-Queue: Kevin Lubick <>
Reviewed-by: Kevin Lubick <>
14 files changed