add force option when start laravel-echo-server, update laravel-ech… (laradock#2052)

* add `force` option when start laravel-echo-server, update laravel-echo-server version'
* move --force ottion to dockerfile

Author: tianyong90

laravel-echo-server/Dockerfile

@@ -19,4 +19,4 @@ RUN npm install
 COPY laravel-echo-server.json /usr/src/app/laravel-echo-server.json
 
 EXPOSE 3000
-CMD [ "npm", "start" ]
+CMD [ "npm", "start", "--force" ]

laravel-echo-server/package.json

@@ -4,9 +4,9 @@
   "version": "0.0.1",
   "license": "MIT",
   "dependencies": {
-    "laravel-echo-server": "^1.2.8"
+    "laravel-echo-server": "^1.5.0"
   },
   "scripts": {
     "start": "laravel-echo-server start"
   }
-}
+}