add laravel echo server

laravel-echo-server/Dockerfile

@@ -0,0 +1,15 @@
+FROM node:argon
+ 
+# Create app directory
+RUN mkdir -p /usr/src/app
+WORKDIR /usr/src/app
+ 
+# Install app dependencies
+COPY package.json /usr/src/app/
+RUN npm install
+ 
+# Bundle app source
+COPY laravel-echo-server.json /usr/src/app/laravel-echo-server.json
+ 
+EXPOSE 3000
+CMD [ "npm", "start" ]