Dockerfile指令

Dockerfile指令

测试

例如官方镜像没有vi ifconfig命令

[root@zhang ~]# docker run -it --name centos_test centos
[root@b3867159d5d9 /]# pwd 
/
[root@b3867159d5d9 /]# vim
bash: vim: command not found
[root@b3867159d5d9 /]# ifconfig
bash: ifconfig: command not found

[root@zhang dockerfile]# vim mydockerfile
[root@zhang dockerfile]# cat mydockerfile 
FROM centos

MAINTAINER zhang<1552039982>

ENV MYPATH /usr/local
WORKDIR $MYPATH

RUN yum -y install vim
RUN yum -y install net-tools

EXPOSE 80

CMD echo $MYPATH
CMD echo "--------end--------"
CMD /bin/bash

[root@zhang dockerfile]# docker build -f mydockerfile -t mycentos:0.1 .

docker history 镜像id

可以查看镜像的构建过程

[root@zhang dockerfile]# docker history mysql
IMAGE          CREATED       CREATED BY                                      SIZE      COMMENT
0627ec6901db   3 weeks ago   /bin/sh -c #(nop)  CMD ["mysqld"]               0B        
<missing>      3 weeks ago   /bin/sh -c #(nop)  EXPOSE 3306 33060            0B        
<missing>      3 weeks ago   /bin/sh -c #(nop)  ENTRYPOINT ["docker-entry…   0B        
<missing>      3 weeks ago   /bin/sh -c ln -s usr/local/bin/docker-entryp…   34B       
<missing>      3 weeks ago   /bin/sh -c #(nop) COPY file:345a22fe55d3e678…   14.5kB    
<missing>      3 weeks ago   /bin/sh -c #(nop) COPY dir:2e040acc386ebd23b…   1.12kB    
<missing>      3 weeks ago   /bin/sh -c #(nop)  VOLUME [/var/lib/mysql]      0B        
<missing>      3 weeks ago   /bin/sh -c {   echo mysql-community-server m…   420MB     
<missing>      3 weeks ago   /bin/sh -c echo 'deb http://repo.mysql.com/a…   55B       
<missing>      3 weeks ago   /bin/sh -c #(nop)  ENV MYSQL_VERSION=8.0.24-…   0B        
<missing>      4 weeks ago   /bin/sh -c #(nop)  ENV MYSQL_MAJOR=8.0          0B        
<missing>      4 weeks ago   /bin/sh -c set -ex;  key='A4A9406876FCBD3C45…   2.61kB    
<missing>      4 weeks ago   /bin/sh -c apt-get update && apt-get install…   52.2MB    
<missing>      4 weeks ago   /bin/sh -c mkdir /docker-entrypoint-initdb.d    0B        
<missing>      4 weeks ago   /bin/sh -c set -eux;  savedAptMark="$(apt-ma…   4.17MB    
<missing>      4 weeks ago   /bin/sh -c #(nop)  ENV GOSU_VERSION=1.12        0B        
<missing>      4 weeks ago   /bin/sh -c apt-get update && apt-get install…   9.34MB    
<missing>      4 weeks ago   /bin/sh -c groupadd -r mysql && useradd -r -…   329kB     
<missing>      4 weeks ago   /bin/sh -c #(nop)  CMD ["bash"]                 0B        
<missing>      4 weeks ago   /bin/sh -c #(nop) ADD file:c855b3c65f5ba94d5…   69.3MB   

学习参考狂神说java