By default, if you are using docker-compose, the logs directory is located in the same directory as the docker-compose.yml file, to change the directory change the following line in docker-compose.yml

    volumes:
      - ./logs:/opt/microblink-api-ws/logs

Microblink API web application logs application events to three different files: wrapper.log - for logging events from the OCR wrapper, debug.log and microblink-api-ws.log - for logging web application events at different logging levels. 

The debug.log and microblink-api-ws.log are compressed and backed up daily into the same logs directory.