remove options about allowed cors in Dockerfile

Dockerfile

@@ -43,6 +43,7 @@ CMD mlflow server -p $PORT \
     --host 0.0.0.0 \
     --backend-store-uri $BACKEND_STORE_URI \
     --default-artifact-root $ARTIFACT_STORE_URI \
+    --allowed-hosts "*" \
     --x-frame-options NONE