ci: fix gemfile.lock permission

Author: wyudong

.github/workflows/jekyll.yml

@@ -15,7 +15,7 @@ jobs:
       run: |
         docker run \
         -v ${{ github.workspace }}:/srv/jekyll -v ${{ github.workspace }}/_site:/srv/jekyll/_site \
-        jekyll/builder:latest /bin/bash -c "chmod 777 /srv/jekyll && jekyll build --future"
+        jekyll/builder:latest /bin/bash -c "chmod a+w /srv/jekyll/Gemfile.lock && chmod 777 /srv/jekyll && jekyll build --future"
     - name: Deploy to server
       uses: easingthemes/[email protected]
       env: