in sample-functions-framework-go/cmd/main.go [11:22]
func main() {
funcframework.RegisterHTTPFunction("/", hello.HelloWorld)
// Use PORT environment variable, or default to 8080.
port := "8080"
if envPort := os.Getenv("PORT"); envPort != "" {
port = envPort
}
if err := funcframework.Start(port); err != nil {
log.Fatalf("funcframework.Start: %v\n", err)
}
}