specify bee (incremental) build cache directory environment variable for windows docker run command and cache to Library directory (#717)

src/model/docker.ts

@@ -107,6 +107,7 @@ class Docker {
             --workdir c:${dockerWorkspacePath} \
             --rm \
             ${ImageEnvironmentFactory.getEnvVarString(parameters)} \
+            --env BEE_CACHE_DIRECTORY=c:${dockerWorkspacePath}/Library/bee_cache \
             --env GITHUB_WORKSPACE=c:${dockerWorkspacePath} \
             ${gitPrivateToken ? `--env GIT_PRIVATE_TOKEN="${gitPrivateToken}"` : ''} \
             --volume "${workspace}":"c:${dockerWorkspacePath}" \