Fix Dockerfile && update .gitignore

.docker/node/Dockerfile

@@ -1,17 +1,27 @@
-FROM node:12-alpine
 
-RUN mkdir -p /home/node/app/node_modules && chown -R node:node /home/node/app
+FROM node:12-alpine as builder
+
+RUN apk add --no-cache python make g++
+
+RUN mkdir -p /home/node/app
 
 WORKDIR /home/node/app
 
-COPY package*.json ./
+COPY . .
+
+RUN npm install --production
 
-USER node
 
-RUN npm install
+FROM node:12-alpine
+
+RUN mkdir -p /home/node/app
+
+WORKDIR /home/node/app
+
+USER node
 
-COPY --chown=node:node . .
+COPY --chown=node:node --from=builder /home/node/app .
 
-EXPOSE 8080
+EXPOSE 3000
 
-CMD [ "node", "index.js" ]
+CMD [ "node", "index" ]

.dockerignore

@@ -1,4 +1,12 @@
 node_modules
 npm-debug.log
 Dockerfile
-.dockerignore
+.dockerignore
+.git
+.idea
+.node
+.github
+.editorconfig
+.eslintrc.js
+.gitignore
+.travis.yml