Added Dockerfile

Dockerfile

+# Prepare nginx
+FROM nginx:1.19-alpine
+WORKDIR /app
+
+# ! This copy source needs to be changed to reflect the actual app name
+COPY ./dist/apps/frontend /usr/share/nginx/html
+
+RUN rm /etc/nginx/conf.d/default.conf
+COPY nginx/nginx.conf /etc/nginx/conf.d
+
+# Fire up nginx
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]