I have a Spring Boot application with a React frontend. I want to put it on the Azure Marketplace, allowing customers to have their own service instance in their private cloud to provide them with security for their data. However, I want to restrict access to the JAR file. I want expose only the the SPA. I need to set some configuration i.e. env variables. Is this possible? If so, can you please give me a hint on which Azure services I should use?