Revert "Symlink /usr/local/bundle to project dir for caching"

This reverts commit 84ee27f4.

.gitlab-ci.yml

@@ -10,9 +10,7 @@ variables:
 
 # Build is in `before_script` because it's the same for both deployments
 before_script:
-  - mkdir -p usr-local-bundle
-  - rm -Rf /usr/local/bundle || true
-  - ln -sf "$(pwd)/usr-local-bundle" /usr/local/bundle
+  - mv usr-local-bundle /usr/local/bundle || true   # Move extracted cache to its original place
   - apk add npm
   - npm install
   - bundle install
@@ -20,6 +18,7 @@ before_script:
   - jekyll build -d public
   - ./scripts/purgecss.sh public
   - ./scripts/minifycssjs.sh public
+  - mv /usr/local/bundle usr-local-bundle || true   # Move cache to workdir so that GitLab will pick it up
 
 deploy-prod:
   stage: deploy