Fix CI test step: use docker run instead of compose

.forgejo/workflows/deploy.yml

@@ -25,14 +25,12 @@ jobs:
       - name: Build Docker image
         run: docker build -t 192.168.8.174:3000/vrubel/chess-calc:latest .
 
-      - name: Test containers
+      - name: Test image
         run: |
-          docker compose up -d
-          sleep 5
-          docker compose logs --tail=20
-
-      - name: Stop containers
-        run: docker compose down
+          docker run -d --name chess-calc-test 192.168.8.174:3000/vrubel/chess-calc:latest sleep 30
+          docker exec chess-calc-test python3 -c "from swiss_calc import parser; print('Module OK')"
+          docker logs chess-calc-test
+          docker rm -f chess-calc-test
 
       - name: Login to Gitea Container Registry
         run: echo "${{ secrets.REGISTRY_TOKEN }}" | docker login http://192.168.8.174:3000 -u "${{ secrets.REGISTRY_USER }}" --password-stdin