ci: add option for running tests without volume

DANGER_CI_ON_HOST_CACHE_FOLDERS if set will mount caches in directories on the host rather than in docker volumes. Supports saving and restoring caches on Github Actions.

.github/workflows/ci.yml

@@ -313,6 +313,7 @@ jobs:
     timeout-minutes: 120
     env:
       FILE_ENV: "./ci/test/00_setup_env_native_asan.sh"
+      DANGER_CI_ON_HOST_CACHE_FOLDERS: 1
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -320,6 +321,9 @@ jobs:
       - name: Set Ccache directory
         run: echo "CCACHE_DIR=${RUNNER_TEMP}/ccache_dir" >> "$GITHUB_ENV"
 
+      - name: Set base root directory
+        run: echo "BASE_ROOT_DIR=${RUNNER_TEMP}" >> "$GITHUB_ENV"
+
       - name: Restore Ccache cache
         id: ccache-cache
         uses: actions/cache/restore@v4