add Dockerfile

docker/Dockerfile

+# Dockerfile
+### STAGE 1: Build ###
+
+# We label our stage as 'builder'
+FROM node:12-alpine as builder
+
+COPY package*.json ./
+
+RUN npm set progress=false && npm config set depth 0 && npm cache clean --force
+
+## Storing node modules on a separate layer will prevent unnecessary npm installs at each build
+RUN npm i && mkdir /ng-app && cp -R ./node_modules ./ng-app
+
+WORKDIR /ng-app
+
+COPY . .
+
+RUN npm run build:ssr
+
+
+### STAGE 2: Setup ###
+
+#FROM nginx:1.13.3-alpine
+FROM node:12-alpine
+
+ENV PORT=4100
+
+COPY --from=builder /ng-app/dist /dist
+
+WORKDIR /
+EXPOSE 4100
+
+RUN node dist/server/main.js

src/app/misc/tab/tab/tab.component.ts

 import { Component, OnInit, ContentChildren, Input, ViewChildren, TemplateRef } from '@angular/core';
-import { TabsComponent } from '../tabs/tabs.component';
-import { Template } from '@angular/compiler/src/render3/r3_ast';
-
 @Component({
   templateUrl: 'tab.component.html',
   selector: 'app-tab',

src/app/misc/tab/tabs/tabs.component.ts

 export class TabsComponent implements OnInit, AfterContentInit {
   faNewspaper = faNewspaper;
   @ContentChildren(TabComponent) tabs: QueryList<TabComponent>;
-  @ContentChildren(TabComponent) activeTab: TabComponent;
+
   public selectTab(tab: TabComponent): void {
     // set direciton for aninmation
     tab.direction = this.getTabAnimationDirection(tab);
     // deactivate all tabs
-    this.tabs.toArray().forEach(tab => tab.active = false);
+    this.tabs.toArray().forEach(tab => {
+      tab.active = false
+    });
 
     // activate the tab the user has clicked on.
     tab.active = true;
   constructor() { }
 
   ngOnInit(): void {
+
   }
 
 }

src/app/news/top-news-dashboard/top-news-dashboard.component.scss

   align-self: center;
 }
 
-.not-found {
-  width: 160em;
-  height: 10em;
-}
-
 @media (max-width: 600px) {
   .filter-bar {
     flex-flow: column;