[GitHub] [airflow] DougForrest commented on issue #14379: Running Airflow in Docker - Tutorial dags backfill tutorial example fails with TypeError: cannot serialize '_io.TextIOWrapper' object

[GitBox <gi...@apache.org>]

DougForrest commented on issue #14379:
URL: https://github.com/apache/airflow/issues/14379#issuecomment-784576282


   I updated the docker-compose.yaml default airflow image which fixed the problem. 
   ```yaml
   -  image: ${AIRFLOW_IMAGE_NAME:-apache/airflow:2.0.1}
   +   image: ${AIRFLOW_IMAGE_NAME:-apache/airflow:master-python3.8}
   ```
   
   
   Output above shows container was running python3.6. The comments in the docker-compose.yaml state the default should be `Default: apache/airflow:master-python3.8`
   
   Created pull request for v2-0-stable. Changes are consistent with master branch.
   https://github.com/apache/airflow/pull/14404


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