ci: persist NuGet restore cache across Linux builds [CI]

ci/build-linux-agent.sh

@@ -9,6 +9,8 @@ case "$rid" in
 esac
 root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 source "$root/ci/version.sh"
+nuget_packages="${NUGET_PACKAGES:-/home/justme/woodpecker/cache/nuget/packages}"
+mkdir -p "$nuget_packages"
 [[ "${CI_COMMIT_SHA:-}" =~ ^[0-9a-fA-F]{40}$ ]] || { echo 'CI_COMMIT_SHA must be a full commit SHA' >&2; exit 2; }
 [[ -n "${CI_COMMIT_TAG:-}" || ( "${CI_PIPELINE_EVENT:-}" == push && "${CI_COMMIT_BRANCH:-}" == main && "${CI_COMMIT_MESSAGE:-}" == *'[CI]'* ) ]] || exit 2
 work="$root/.release/linux-agent/$rid"
@@ -46,7 +48,7 @@ python3 "$root/ci/stage-node-image.py" agent "$rid" "$context"
 local_image="localhost/moshiro-agent-binaries:$rid"
 # Buildah --jobs runs independent native-link stages concurrently.
 python3 "$root/ci/run-with-timeout.py" 1800 buildah bud --layers --force-rm --jobs 2 --network host \
-  --tls-verify=true --ulimit nofile=65536:65536 --arch amd64 \
+  --tls-verify=true --ulimit nofile=65536:65536 --volume "$nuget_packages:/root/.nuget/packages:ro,z" --arch amd64 \
   --build-arg "NATIVEAOT_RESTORE_IMAGE=$restore_image" \
   --build-arg "NODE_RID=$rid" --build-arg "STATIC_MSQUIC=$static_msquic" \
   --build-arg "APP_VERSION=$MOSHIRO_VERSION" --build-arg "MOSHIRO_TAG=$MOSHIRO_TAG" \