tree 4929f2bcb6d02efed8dde2968564f957badee70d
parent 832b52b4853d498d4d7b80e05c9f6fe8eeb6f2ad
author Alex Van Damme <atv@google.com> 1535154919 -0700
committer Alex Van Damme <atv@google.com> 1535155673 -0700

Change pbuilder to a cross-arm64 instead of native

- In pbuilder, set architecture to amd64 and host-arch to arm64. This
provides an amd64 chroot that cross-compiles for arm64, and as a result
is *much* faster.
- Also, bind mount /var/cache/pbuilder. This way separate invocations of
pbuilder inside docker will still be able to reuse fetched packages.

Change-Id: I686af7e3a2c9f89569b9b2103142199625efc8f2