Merge pull request #5 from markovianhq/fix/bump_airflow_version

Bump airflow commit

Author: waltherg

Dockerfile

@@ -7,7 +7,7 @@ ENV TERM linux
 # Airflow
 ARG AIRFLOW_VERSION=1.7.1.3
 ARG AIRFLOW_REPO_URL=https://github.com/apache/incubator-airflow.git
-ARG AIRFLOW_COMMIT=fe037d6
+ARG AIRFLOW_COMMIT=78ebd47
 ENV AIRFLOW_HOME /usr/local/airflow
 
 # Define en_US.