Dockerfile 在创建的镜像中安装命令

wangshumin@machine1:~/sinatra$ ll
总用量 12
drwxrwxr-x  2 wangshumin wangshumin 4096 3月   8 11:41 ./
drwxr-xr-x 27 wangshumin wangshumin 4096 3月   8 11:41 ../
-rw-rw-r--  1 wangshumin wangshumin  260 3月   8 11:41 Dockerfile
wangshumin@machine1:~/sinatra$ cat  Dockerfile 
# This is a comment
FROM ubuntu
MAINTAINER Docker1 wangshumin <wangshumin@docker.com>
RUN apt-get  update
RUN apt-get  install -y net-tools
RUN apt-get  install -y iputils-ping
RUN apt-get install  -y nginx
RUN apt-get install  -y curl
EXPOSE 80
CMD /bin/bash
wangshumin@machine1:~/sinatra$ pwd
/home/wangshumin/sinatra
wangshumin@machine1:~/sinatra$ 
wangshumin@machine1:~/sinatra$ docker  build  -t="wangshumin_isodocker:v3" .
Sending build context to Docker daemon 2.048 kB
Step 1/9 : FROM ubuntu
 ---> 0458a4468cbc
Step 2/9 : MAINTAINER Docker1 wangshumin <wangshumin@docker.com>
 ---> Using cache
 ---> 3f38995f6df6
Step 3/9 : RUN apt-get  update
 ---> Running in 1fd462aefe28
Get:1 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Get:2 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:3 http://security.ubuntu.com/ubuntu xenial-security/universe Sources [73.2 kB]
Get:4 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages [587 kB]
Get:5 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Get:6 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Get:7 http://archive.ubuntu.com/ubuntu xenial/universe Sources [9802 kB]
Get:8 http://security.ubuntu.com/ubuntu xenial-security/restricted amd64 Packages [12.7 kB]
Get:9 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 Packages [406 kB]
Get:10 http://security.ubuntu.com/ubuntu xenial-security/multiverse amd64 Packages [3486 B]
Get:11 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages [1558 kB]
Get:12 http://archive.ubuntu.com/ubuntu xenial/restricted amd64 Packages [14.1 kB]
Get:13 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages [9827 kB]