build: add Dockerfile to run the project in container (#262)

* Dockerfile added to build static files and serve with NGINX Distroless

* replaced final image distroless with official nginx unprivileged to support multi arch.

* runtime image to official nginx

* README updated

* docs: update README for Docker commands

---------

Co-authored-by: satnaing <satnaingdev@gmail.com>

Dockerfile

@@ -0,0 +1,12 @@
+# Base stage for building the static files
+FROM node:lts AS base
+WORKDIR /app
+COPY package*.json ./
+RUN npm install
+COPY . .
+RUN npm run build
+
+# Runtime stage for serving the application
+FROM nginx:mainline-alpine-slim AS runtime
+COPY --from=base ./app/dist /usr/share/nginx/html
+EXPOSE 80