Introduce docker for web app

web/.dockerignore

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+node_modules
+.git

web/Dockerfile

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+FROM node:9-alpine as build
+COPY package.json package-lock.json ./
+RUN npm set progress=false \
+ && npm config set depth 0 \
+ && npm cache clean --force
+RUN npm i \
+ && mkdir /app \
+ && cp -R ./node_modules /app
+WORKDIR /app
+COPY . .
+RUN $(npm bin)/ng build --prod --build-optimizer
+
+FROM nginx:1.13.3-alpine
+RUN rm -rf /var/www/html/*
+COPY nginx/default.conf /etc/nginx/conf.d/
+COPY --from=build /app/dist /var/www/html
+CMD ["nginx", "-g", "daemon off;"]

web/nginx/default.conf

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+server {
+  listen 80;
+  sendfile on;
+  default_type application/octet-stream;
+  gzip              on;
+  gzip_http_version 1.1;
+  gzip_disable      "MSIE [1-6]\.";
+  gzip_min_length   256;
+  gzip_vary         on;
+  gzip_proxied      expired no-cache no-store private auth;
+  gzip_types        text/plain text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript;
+  gzip_comp_level   9;
+
+  root /var/www/html;
+
+  location / {
+    try_files $uri $uri/ /index.html =404;
+  }
+
+}