[feature] Use packr to include UI files into binary

Author: g3force

cmd/ssl-game-controller/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"github.com/g3force/ssl-game-controller/internal/app/controller"
+	"github.com/gobuffalo/packr"
 	"net/http"
 )
 
@@ -10,8 +11,9 @@ func main() {
 	g := controller.NewGameController()
 	g.Run()
 
-	// serve the static resource of UI (for production use only)
-	http.Handle("/", http.FileServer(http.Dir(".")))
+	box := packr.NewBox("../../ui/dist")
+	http.Handle("/", http.FileServer(box))
+
 	// serve the bidirectional web socket
 	http.HandleFunc("/ws", g.ApiServer.WsHandler)
 	http.ListenAndServe(":8081", nil)

release.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+# stop on errors
+set -e
+
+echo "Build UI for production"
+cd ui
+npm run build
+cd ..
+
+echo "Build backend and include static UI files with packr into binary"
+cd cmd/ssl-game-controller
+packr install
+
+if [ -z "${GOPATH}" ]; then
+    GOPATH="~/go"
+fi
+echo "Self-contained binary can be found here: ${GOPATH}/bin/ssl-game-controller"