message: docker: Incorrect port after restart when PORT is 8080
  When PORT is 8080 and dokcer restart, nginx will listen
diff: @@ -6,6 +6,6 @@ sed -i -e "s|%PAGE_TITLE%|$PAGE_TITLE|g" /usr/share/nginx/html/index.html
  sed -i -e "s|%PAGE_FAVICON%|$PAGE_FAVICON|g" /usr/share/nginx/html/index.html
  sed -i -e "s|%SPEC_URL%|$SPEC_URL|g" /usr/share/nginx/html/index.html
  sed -i -e "s|%REDOC_OPTIONS%|${REDOC_OPTIONS}|g" /usr/share/nginx/html/index.html
  -sed -i -e "s|80|${PORT}|g" /etc/nginx/nginx.conf
  +sed -i -e "s|\(listen\s*\) [0-9]*|\1 ${PORT}|g" /etc/nginx/nginx.conf
  exec nginx -g 'daemon off;'
  