build: add first draft for Docker

Dockerfile

+FROM node:lts-alpine as build-stage
+
+# make the 'app' folder the current working directory
+WORKDIR /app
+
+# copy both 'package.json' and 'package-lock.json' (if available)
+COPY package*.json ./
+
+# install project dependencies
+RUN npm install
+
+# copy project files and folders to the current working directory (i.e. 'app' folder)
+COPY . .
+RUN npm run build
+
+# production stage
+FROM nginx:stable-alpine as production-stage
+COPY --from=build-stage /app/dist /usr/share/nginx/html
+EXPOSE 8093
+CMD ["nginx", "-g", "daemon off;"]
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