Add docker file

.dockerignore

+Dockerfile
+node_modules
+.gitignore
+README.md
+.env.template
+

Dockerfile

+FROM node:10
+COPY package.json .
+COPY package-lock.json .
+RUN npm install
+COPY . .
+EXPOSE 4200
+CMD  "npm run build"
+ENTRYPOINT ["npm", "run", "start"]
+