change docker

Author: Alan

docker/nginx/Dockerfile

@@ -14,6 +14,8 @@ RUN npm run build
 
 FROM nginx:latest
 COPY --from=build_frontend /app/build /usr/share/nginx/html
-COPY ./docker/nginx/nginx.conf /etc/nginx/conf.d/default.conf
+RUN rm /etc/nginx/conf.d/default.conf
+COPY ./docker/nginx/nginx.conf /etc/nginx/conf.d
+EXPOSE 80
 
 CMD ["nginx", "-g", "daemon off;"]