try tvm

Author: alxndrsn

.github/workflows/github-pages.yml

@@ -28,7 +28,15 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
       - uses: ./.github/actions/install-deps
-      - run: sudo apt-get install -y ruby=2.2
+      # install rvm and ruby 2.2
+      - run: sudo apt-get -y install software-properties-common
+      - run: sudo apt-add-repository -y ppa:rael-gc/rvm
+      - run: sudo apt-get update
+      - run: sudo apt-get install rvm
+      - run: sudo usermod -a -G rvm $USER
+      - run: . /etc/profile.d/rvm.sh
+      - run: rvm install 2.2
+      - run: rvm use 2.2
       - run: sudo gem install bundler -v 2.1.4
       # TODO use npm run install-jekyll?
       - run: sudo ./bin/install-jekyll.sh