8888ee4403 ci: Allow build dir on CI host (MarcoFalke)
Pull request description:
This is required to pass cross builds on to a different machine after the build.
See for example https://github.com/bitcoin/bitcoin/pull/31176, but this pull will also allow someone to implement it outside this repo.
ACKs for top commit:
davidgumberg:
lgtm ACK 8888ee4403
hebasto:
re-ACK 8888ee4403.
Tree-SHA512: a1e2c32bc1b95efbd0b48287ac5b49e0e1bacbf5a5800845be5352bbdd3e17fa478e90348b2e94e95cf3ae863cdf75ab444089376588f6f8eec438f73a4b5b97