Add ccache to buildpack-deps images #16384
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| --rm \ | ||
| --volume "${PWD}:/project" \ | ||
| -u "$(id -u "${USER}"):$(id -g "${USER}")" \ | ||
| -e CCACHE_DIR=/tmp/ccache \ |
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After talk with @marcocastignoli, the reason for this change is that the user mapping above (i.e. -u) runs the container as the host user, who may not exist inside the container and cannot write to the default $HOME/.ccache. Thus we redirect ccache to /tmp which is world-writable.
In #16356 I created both the new buildpack-deps images and I edited
.circleci/config.ymlin the same PR. This PR is needed to do the first step separately, another PR with the.circleci/config.ymlwill follow.