diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6bdfe5e..b416fd9 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,16 +15,16 @@ jobs:
       matrix:
         ruby-version:
           - 3.2
-          - 3.1
-          - "3.0"
-          - 2.7
-          - 2.6
-          - 2.5
+          #- 3.1
+          #- "3.0"
+          #- 2.7
+          #- 2.6
+          #- 2.5
         rails-version:
           # - "edge"
-          - 7
+          #- 7
           - 6.1
-          - "6.0"
+          #- "6.0"
         exclude:
           # Rails 7 requires Ruby 2.7+
           - ruby-version: 2.5
@@ -38,20 +38,46 @@ jobs:
             rails-version: "6.0"
     steps:
       - uses: actions/checkout@v3
+      - name: echo environment1
+        run: |
+          cat /etc/environment
       - name: Set up Ruby ${{ matrix.ruby-version }}
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby-version }}
+      - name: echo environment2
+        run: |
+          cat /etc/environment
       - uses: actions/setup-node@v3
         with:
           node-version: 18
+      - name: echo environment3
+        run: |
+          cat /etc/environment
+      - name: Add non-root user foo
+        run: |
+          adduser --disabled-login --disabled-password --gecos '' foo
       - name: Install Yarn
-        run: npm install -g yarn
+        run: |
+          su - foo <<'HERE'
+          npm install -g yarn
+          HERE
       - name: Run gem tests
         run: |
+          ruby --version
+          echo $PATH
+
+          su - foo <<'HERE'
+          echo $PATH
+          which ruby
+          echo GOT HERE 1
+          ruby --version
+          echo GOT HERE 2
+          gem install bundler
           bundle config set --local path '/tmp/gem-tests'
           bundle
           bundle exec rake
+          HERE
       - name: Set up new Rails dummy app
         working-directory: ./spec
         env: