Add Docker files and scripts

By running "docker-compose -f docker/docker-compose.yml up" the frontend 
and a mock backend can be run. This enables unit and e2e testing.

There is also a Dockerfile for producing a production ready container 
using nginx as base.

The specs.yml file serves as an API definition for the backend mock 
container. This needs to be updated (i.e. copied over) manually whenever 
the backend API changes. This workflow may be improved in the future.

docker/.dockerignore

+node_modules
+.git
+.gitignore

docker/Dockerfile

+FROM node:13.14.0
+
+# install chrome for protractor tests
+RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
+RUN sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
+RUN apt-get update && apt-get install -yq google-chrome-stable
+
+WORKDIR /app
+
+ENV PATH /app/node_modules/.bin:$PATH
+
+COPY package.json /app/package.json
+RUN npm install
+
+# install webdriver for browser testing
+RUN npm i --prefix=./node_modules/protractor --save webdriver-manager@latest
+RUN npx webdriver-manager update
+
+COPY . /app
+
+EXPOSE 4200
+
+CMD ng serve --disableHostCheck --host 0.0.0.0

docker/Dockerfile-prod

+FROM node:13.14.0 as build
+
+# install chrome for protractor tests
+RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
+RUN sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
+RUN apt-get update && apt-get install -yq google-chrome-stable
+
+WORKDIR /app
+
+ENV PATH /app/node_modules/.bin:$PATH
+
+COPY package.json /app/package.json
+RUN npm install
+
+# install webdriver for browser testing
+RUN npm i --prefix=./node_modules/protractor --save webdriver-manager@latest
+RUN npx webdriver-manager update
+
+COPY . /app
+
+RUN ng test --watch=false
+RUN ng e2e --webdriver-update=false --port 4202
+
+RUN ng build --output-path=dist
+
+# ===========================================
+
+FROM nginx:1.19.1-alpine
+
+COPY --from=build /app/dist /usr/share/nginx/html
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]

docker/docker-compose.yml

+version: '3.7'
+
+services:
+
+  testcenter-frontend:
+    build:
+      context: ../
+      dockerfile: docker/Dockerfile
+    container_name: testcenter-frontend
+    volumes:
+      - ../:/app
+      - /app/node_modules
+    ports:
+      - '4201:4200'
+
+  backend-mock:
+    image: stoplight/prism:3
+    volumes:
+      - ./scripts:/api
+    ports:
+      - '8000:4010'
+    command:
+      mock -h 0.0.0.0 "/api/specs.yml"