added dockerfile and updated Readme

Dockerfile

@@ -0,0 +1,11 @@
+# Use the official Nginx image as the base image
+FROM nginx:alpine
+
+# Remove the default Nginx static files
+RUN rm -rf /usr/share/nginx/html/*
+
+# Copy all your app's files into the Nginx directory
+COPY . /usr/share/nginx/html
+
+# Expose port 80
+EXPOSE 80