# escape=\ (backslash)# This dockerfile uses the ubuntu:xeniel image# VERSION 2- EDITION 1# Author: docker_user# Command format: Instruction [arguments / command] ..# Base image to use, this must be set as the first lineFROM ubuntu:xeniel# Maintainer: docker_user <docker_user at email.com> (@docker_user)LABEL maintainer docker_user<docker_user@email.com># Commands to update the imageRUN echo "deb http://archive.ubuntu.com/ubuntu/ xeniel main universe" >> /etc/ apt/sources.listRUN apt-get update && apt-get install -y nginxRUN echo "\ndaemon off; " >> /etc/nginx/nginx.conf# Commands when creating a new containerCMD /usr/sbin/nginx