Creating a templated BashOperator

You've successfully created a BashOperator that cleans a given data file by executing a script called cleandata.sh. This works, but unfortunately requires the script to be run only for the current day. Some of your data sources are occasionally behind by a couple of days and need to be run manually.

You successfully modify the cleandata.sh script to take one argument - the date in YYYYMMDD format. Your testing works at the command-line, but you now need to implement this into your Airflow DAG. For now, use the term {{ ds_nodash }} in your template - you'll see exactly what this means later on.