Added Config.Address to allow the server to bind to a different IP address

config.json.sample

@@ -1,5 +1,6 @@
 {
   "WebUrl": "https://domain.com",
+  "Address": "",
   "Port": 8080,
   "ApiPrefix": "",
   "KeyFile": "",

core/model/types/config.go

@@ -2,6 +2,7 @@ package types
 
 type Config struct {
 	WebUrl          string
+	Address         string
 	Port            int
 	ApiPrefix       string
 	KeyFile         string

core/server.go

@@ -48,9 +48,9 @@ func main() {
 	}
 
 	if config.CertFile == "" || config.KeyFile == "" {
-		err = http.ListenAndServe(":"+strconv.Itoa(config.Port), app.MakeHandler())
+		err = http.ListenAndServe(config.Address+":"+strconv.Itoa(config.Port), app.MakeHandler())
 	} else {
-		err = http.ListenAndServeTLS(":"+strconv.Itoa(config.Port), config.CertFile, config.KeyFile, app.MakeHandler())
+		err = http.ListenAndServeTLS(config.Address+":"+strconv.Itoa(config.Port), config.CertFile, config.KeyFile, app.MakeHandler())
 	}
 	log.Fatal(fmt.Errorf("failed to start server with: %s", err.Error()))
 }