fix: use docker exec for playout health check in CD workflow

.gitea/workflows/cd.yml

@@ -66,10 +66,14 @@ jobs:
           docker compose -f docker-compose.prod.yml up -d --remove-orphans
 
       - name: Health check
+        env:
+          DOCKER_HOST: tcp://192.168.88.40:2375
         run: |
           sleep 10
           curl -f http://192.168.88.40:3000/health || exit 1
-          curl -f http://192.168.88.40:8081/health || exit 1
+          docker exec linearvoid-playout curl -sf http://localhost
+          curl -f http://192.168.88.40:3000/health || exit 1
+          docker exec linearvoid-playout curl -sf http://localhost:8081/health || exit 1
 
       - name: Cleanup old images
         env: