Add dockerfile to build docker image of prod app

.dockerignore

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+node_modules
+.git
+.editorconfig
+.gitignore

Dockerfile

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+# Stage 1: Compile and Build the app
+
+# Node veersion
+FROM node:14.15.1 as build
+
+# update 
+
+RUN apt-get update
+RUN apt-get -y install curl gnupg
+RUN curl -sL https://deb.nodesource.com/setup_14.x  | bash -
+RUN apt-get -y install nodejs
+
+# Set the working directory
+WORKDIR /usr/local/app
+
+# Add the source code to app
+COPY ./ /usr/local/app/
+
+WORKDIR js
+# Install all the dependencies
+RUN yarn install
+RUN yarn bootstrap
+
+# HERE ADD YOUR STORE WALLET ADDRESS
+ENV REACT_APP_STORE_OWNER_ADDRESS_ADDRESS=""
+
+# Generate the build of the application
+ENV GENERATE_SOURCEMAP=false
+RUN yarn build
+
+# Stage 2: Serve app with nginx server
+
+# Use official nginx image as the base image
+FROM nginx:latest
+
+# Copy the build output to replace the default nginx contents.
+COPY --from=build /usr/local/app/js/build/web /usr/share/nginx/html
+
+# Expose port 80
+EXPOSE 80