SpringBoot deployed under context path

Question

Have a SpringBoot application packaged as an EAR and deployed to a local TomEE 7 instance.

Once deployed, is hosted under a context path of TOMEE/my-app-api

A static index.html page in webapp folder is served correctly from TOMEE/my-app-api/index.html

I have a RestController with a single GET endpoint mapped to /api/country

When I try and call the RestController via TOMEE/my-app-api/api/country I get a 404.

If I run the same app from the embedded Tomcat instance and call the RestController via TOMCAT/api/country I get a successful response.

Is there anything additional I need to configure in order for SpringBoot to be hosted under this context path?

EAR Gradle Task

apply plugin: 'ear'
version = '1.0.0-SNAPSHOT'

ear {
    archiveName = 'git rev-parse --short HEAD'.execute().text.trim() + "-$version" + '-service.ear'
    baseName = 'git rev-parse --short HEAD'.execute().text.trim()
    version= "-$version" + '-service'

    deploymentDescriptor {
        displayName = 'Service API'
        webModule('service-api.war', 'service-api')
    }
}

dependencies{
    deploy project(path: ':service-api', configuration: 'archives')
    deploy project(path: ':service-data', configuration: 'archives')
    deploy project(path: ':service-rules', configuration: 'archives')
}

Application class

@SpringBootApplication
public class ServiceApplication extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(ServiceApplication.class);
    }

    public static void main(String[] args) {
        SpringApplication.run(ServiceApplication.class, args);
    }
}