To use flow script files in Docker, we need the following arguments to be set properly: •

stored_as_script

= True •

path

must point to the path in the image • if this path is different than /opt/prefect/flows/YOUR_FLOW.py, then you also need to change the default

prefect_directory

to your custom directory • you need to add the flow to the storage explicitly before registering, e.g.: docker_storage.add_flow(flow) • finally, registering the flow must happen from Python, since the

prefect register

CLI doesn’t have the option to pass build=False, and this is critical to include to prevent pickling flow and rebuilding the image on registration • the parameter

ignore_healthchecks

on the Docker storage is optional and doesn’t affect this process at all