Run CI in our docker-compose setup

.github/workflows/tests.yml

@@ -10,53 +10,37 @@ on:
 jobs:
   setup:
     runs-on: ubuntu-latest
+    container: registry.opensuse.org/opensuse/infrastructure/software.opensuse.org/containers/software/base:latest
     steps:
       - uses: actions/checkout@v4
-      - uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 3.1
-          bundler-cache: true
+      - run: |
+          ls
+          cat /etc/os-release
   linter:
     needs: setup
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 3.1
-          bundler-cache: true
       - name: Run linter
-        run: bundle exec rubocop
+        run: docker-compose run --rm software bundle exec rubocop
   haml-linter:
     needs: setup
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 3.1
-          bundler-cache: true
       - name: Run linter
-        run: bundle exec haml-lint app/views/
+        run: docker-compose run --rm software bundle exec haml-lint app/views/
   unit:
     needs: [linter, haml-linter]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 3.1
-          bundler-cache: true
       - name: Run unit tests
-        run: bundle exec rake test
+        run: docker-compose run --rm software bundle exec rake test
   system:
     needs: [linter, haml-linter]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 3.1
-          bundler-cache: true
       - name: Run system tests
-        run: bundle exec rake test:system
+        run: docker-compose run --rm software bundle exec rake test:system