Add Dockerfile and nginx config

Dockerfile

+FROM nginx
+
+RUN apt-get update
+RUN apt-get install -y curl
+
+RUN curl -sL https://deb.nodesource.com/setup_10.x | bash
+
+RUN apt-get install -y nodejs
+
+COPY package.json /app/
+COPY package-lock.json /app/
+
+WORKDIR /app/
+
+RUN npm install
+
+COPY . /app/
+
+RUN npm run build -- --prod --base-href=/covid19/
+
+RUN cp -r dist/covid19/* /usr/share/nginx/html/
+
+COPY nginx/default.conf /etc/nginx/conf.d/
+
+EXPOSE 80

nginx/default.conf

+server {
+    listen       80;
+    server_name  localhost;
+
+    index index.html;
+    root /usr/share/nginx/html;
+
+    location / {
+        try_files $uri$args $uri$args/ /index.html;
+    }
+}