Python: Resolving the error "make: No rule to make target 'run'"

This documentation is part of the Troubleshooting guide. You can view the complete guide here: Encountering an issue with your Python service? The solution is probably here!.

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This error indicates that either a Makefile is missing in the root of your project or the existing Makefile does not define a run target.

To resolve this, you can create a Makefile in your project's root directory with the following example content:

run:
	ENV=production gunicorn app:app \
	--error-logfile - \
	-b 0.0.0.0:8080

This script starts a Gunicorn server, executes the app.py file with the Flask instance app, and listens on port 8080.

Consider using an enhanced Makefile to simplify running your development environment and deploying your application.