Experiment: do NOT merge.

Run Docker in rootless mode to see if it addresses permission errors.

Author: Kurt-von-Laven

.github/workflows/test-mega-linter-runner.yml

@@ -22,6 +22,8 @@ jobs:
         uses: actions/[email protected]
         with:
           node-version: "12"
+      - name: Use Docker in rootless mode.
+        uses: ScribeMD/[email protected]
       - name: Install dependencies
         run: cd mega-linter-runner && yarn install --frozen-lockfile && npm link
       - name: Run tests