fix api-testing image path

Dockerfile

@@ -13,7 +13,7 @@ RUN apt-get update && \
 WORKDIR /app
 
 COPY --from=ingest_source /app/ingest-service /app/ingest-service/ingest-service
-COPY --from=api_testing_source /usr/local/bin/api-testing /app/api-testing/api-testing
+COPY --from=api_testing_source /app/api-testing /app/api-testing/api-testing
 
 COPY --from=ml_source /opt/venv /opt/ml_venv
 COPY --from=ml_source /app/app /app/ml-service/app