added Expose 80

Author: divyeshbhalekar

Dockerfile

@@ -6,5 +6,5 @@ COPY . .
 RUN npm run build 
 
 FROM nginx
-COPY --from=builder /app/build /usr/share/nginx/html 
-
+EXPOSE 80
+COPY --from=builder /app/build /usr/share/nginx/html