Staged Docker builds for dev and prod

backend/Dockerfile

@@ -1,5 +1,5 @@
 # pull official node image
-FROM node
+FROM node AS dev
 
 # define /app as working directory
 WORKDIR /app
@@ -13,4 +13,10 @@ RUN npm install
 COPY . /app
 
 # launch node server
+ENTRYPOINT npm run dev
+
+# production
+FROM node AS prod
+WORKDIR /app
+COPY --from=dev /app ./
 ENTRYPOINT npm run start

backend/package.json

@@ -5,8 +5,8 @@
   "main": "server.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
-    "start": "nodemon server.js -e ejs,js,css,html,jpg,png,scss",
-    "build": "cd frontend && npm install && npm run build"
+    "dev": "nodemon server.js -e ejs,js,css,html,jpg,png,scss",
+    "prod": "node.js server.js"
   },
   "keywords": [],
   "author": "",