fix: nginx build context, playout health check retry loop

.gitea/workflows/cd.yml

@@ -69,9 +69,21 @@ jobs:
         env:
           DOCKER_HOST: tcp://192.168.88.40:2375
         run: |
-          sleep 10
+          # Wait for playout to stabilize (it may restart during init)
+          sleep 20
           curl -f http://192.168.88.40:3000/health || exit 1
-          docker exec linearvoid-playout curl -sf http://localhost
+          # Retry playout health check since it may still be initializing
+          for i in $(seq 1 6); do
+            if docker exec linearvoid-playout curl -sf http://localhost:8081/health; then
+              echo "Playout is healthy"
+              exit 0
+            fi
+            echo "Playout not ready yet (attempt $i/6), waiting 5s..."
+            sleep 5
+          done
+          echo "Playout failed to become healthy after 6 attempts"
+          docker logs linearvoid-playout --tail 50
+          exit 1
           curl -f http://192.168.88.40:3000/health || exit 1
           docker exec linearvoid-playout curl -sf http://localhost:8081/health || exit 1