How to deploy automatically?

This is a very generic question. I think you are looking for continuous integration. For CI you need to have a runtime environment like cloudhub, one build tool like maven, one code repository like git/github and one scheduler tool like Jenkins. Please go through this documentation for additional details.

There a some webinars that may help you understand the concepts and how to implement them. These are related specifically to Anypoint Platform and api's but they should help understand what can be done.

https://www.mulesoft.com/webinars/api/devops-api-lifecycle-anypoint-platform https://www.mulesoft.com/webinars/api/devops-api-lifecycle-demo

There a some webinars that may help you understand the concepts and how to implement them. These are related specifically to Anypoint Platform and api's but they should help understand what can be done.

https://www.mulesoft.com/webinars/api/devops-api-lifecycle-anypoint-platform https://www.mulesoft.com/webinars/api/devops-api-lifecycle-demo

I am doing this with the Maven plugin for mule and using the 'deploy' verb. You can include login credentials in your POM (yuck) or pass as parameters with -Dxxxxxx=yyyyyyy in your Maven command line via a 'terminal' type window, using Maven to package and deploy with sometihng like Jenkins, or using the Anypoint Command Line Interface (CLI) tool as well. For these you would need a CloudHub account or Private Cloud (on-premise) setup to deploy to the Anypoint Platform.

If just deploying to an MMC you can use the plugin here https://github.com/NicholasAStuart/Maven-Mule-REST-Plugin or a derivative of it to deploy to a local MMC as well.