Set up test runner workflow

.forgejo/workflows/run-tests.yml

@@ -8,10 +8,21 @@ on:
 jobs:
   test:
     runs-on: docker
+    container:
+      image: lisyarus/psemek:package-linux
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Configure
+        run: |
+          mkdir build && cd build
+          cmake .. -DCMAKE_BUILD_TYPE=Release -DPSEMEK_BUILD_TESTS=ON -DCMAKE_PREFIX_PATH="/home/sdl2/install"
+
+      - name: Build
+        run: |
+          cmake --build . -j
+
       - name: Run tests
         run: |
-          echo "Replace with your real test command"
+          ./tools/test/psemek-run-tests