feat: added Dockerfile (#75)

* feat: added Dockerfile (#72)

* fix: applying requested fixes on Dockerfile

* fix: updated exposed port on Dockerfile
chore: updated readme with docker instructions

* Update README.md

Co-authored-by: nugaon <50576770+nugaon@users.noreply.github.com>

* fix: fixed codeblock in readme

Co-authored-by: nugaon <50576770+nugaon@users.noreply.github.com>

Dockerfile

@@ -0,0 +1,12 @@
+FROM node:15.14-alpine AS build
+WORKDIR /src
+COPY . .
+RUN npm ci
+RUN npm run build
+
+FROM node:15.14-alpine AS final
+RUN npm i -g serve
+WORKDIR /app
+COPY --from=build /src/build .
+EXPOSE 8080
+ENTRYPOINT ["serve", "-l", "8080"]