Mike Hommey 1e499e6b27 Bug 1392370 - Enable xz parallel compression on Debian-based docker images. r=gps ... This makes the XZ_OPT environment variable set for every task that runs on those docker images, effectively enabling parallel compression for all of them. For e.g. the gcc 4.9 toolchain build task, this makes the final compression step take 23s instead of > 3 minutes. --HG-- extra : rebase_source : 83809f1f72007cc0829573f1def29a9afdc300c9		2018-01-18 15:22:30 +09:00
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