编写Dockerfile增强centos镜像：安装vim 和net-tools

╰半夏微凉° 2023-10-06 14:03 6阅读 0赞

### 批量删除正在运行的docker容器 ###

> docker rm -f $(docker ps -q)

#删除正在运行的容器 -q是容器ID
    docker rm -f $(docker ps -q)
    
    docker run -it centos /bin/bash
    [root@c35acdee94f5 /]# pwd
    /
    [root@c35acdee94f5 /]# vim 1.txt
    bash: vim: command not found
    [root@c35acdee94f5 /]#

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70]

### 增强centos镜像 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 1]

#### Dockerfile脚本内容 ####

FROM centos
    MAINTAINER zxl
    ENV MYPATH /usr/local
    WORKDIR $MYPATH
    RUN yum -y install vim
    RUN yum -y install net-tools
    EXPOSE 80
    CMD echo $MYPATH
    CMD echo "success--------------------ok"
    CMD /bin/bash

#### 自定义Dockerfile脚本名称 ####

> docker build -f /workspace/docker/Dockerfile\_mycentos -t mycentos:1.0 .

#构建日志分析
    
    docker build -f /workspace/docker/Dockerfile_mycentos -t mycentos:1.0 .
    
    Sending build context to Docker daemon  2.048kB
    Step 1/10 : FROM centos
     ---> 831691599b88
    Step 2/10 : MAINTAINER zxl
     ---> Running in e07788688d45
    Removing intermediate container e07788688d45
     ---> a82dcc01fd28
    Step 3/10 : ENV MYPATH /usr/local
     ---> Running in 41025cc720ea
    Removing intermediate container 41025cc720ea
     ---> c8a228cfb683
    Step 4/10 : WORKDIR $MYPATH
     ---> Running in d5886ae1db81
    Removing intermediate container d5886ae1db81
     ---> a8a64debc724
    Step 5/10 : RUN yum -y install vim
     ---> Running in 6aff19c80e35
     Removing intermediate container 6aff19c80e35
     ---> 305e52dde1a4
    Step 6/10 : RUN yum -y install net-tools
     ---> Running in 65cedbfcbd04
     Removing intermediate container 65cedbfcbd04
     ---> 4205f2211f78
    Step 7/10 : EXPOSE 80
     ---> Running in 4587d06aa791
    Removing intermediate container 4587d06aa791
     ---> 33c9f36fedd5
    Step 8/10 : CMD echo $MYPATH
     ---> Running in 67121426d7bd
    Removing intermediate container 67121426d7bd
     ---> e9dfce53a5cf
    Step 9/10 : CMD echo "success--------------------ok"
     ---> Running in f04f2b2cee9a
    Removing intermediate container f04f2b2cee9a
     ---> af402f3387d7
    Step 10/10 : CMD /bin/bash
     ---> Running in e81a287c288a
    Removing intermediate container e81a287c288a
     ---> 512d695d8553
    Successfully built 512d695d8553
    Successfully tagged mycentos:1.0

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 2]

docker images
    REPOSITORY          TAG                 IMAGE ID            CREATED              SIZE
    mycentos            1.0                 512d695d8553        About a minute ago   295MB
    centos              latest              831691599b88        6 weeks ago          215MB

#### 基于自定义centos镜像运行容器 ####

> vim和ifconfig的命令都支持了。

docker run -it mycentos:1.0 /bin/bash
    
    [root@03dbfdb30935 local]# pwd
    /usr/local
    [root@03dbfdb30935 local]# vim 1.txt
    [root@03dbfdb30935 local]# ifconfig
    eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 172.17.0.2  netmask 255.255.0.0  broadcast 172.17.255.255
            ether 02:42:ac:11:00:02  txqueuelen 0  (Ethernet)
            RX packets 26  bytes 4558 (4.4 KiB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 0  bytes 0 (0.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
            inet 127.0.0.1  netmask 255.0.0.0
            loop  txqueuelen 1000  (Local Loopback)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 0  bytes 0 (0.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    [root@03dbfdb30935 local]#

### docker history命令 ###

docker images
    REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
    mycentos            1.0                 512d695d8553        12 minutes ago      295MB
    centos              latest              831691599b88        6 weeks ago         215MB
    
    docker history 512d695d8553
    IMAGE               CREATED             CREATED BY                                      SIZE                COMMENT
    512d695d8553        12 minutes ago      /bin/sh -c #(nop)  CMD ["/bin/sh" "-c" "/bin…   0B
    af402f3387d7        12 minutes ago      /bin/sh -c #(nop)  CMD ["/bin/sh" "-c" "echo…   0B
    e9dfce53a5cf        12 minutes ago      /bin/sh -c #(nop)  CMD ["/bin/sh" "-c" "echo…   0B
    33c9f36fedd5        12 minutes ago      /bin/sh -c #(nop)  EXPOSE 80                    0B
    4205f2211f78        12 minutes ago      /bin/sh -c yum -y install net-tools             22.8MB
    305e52dde1a4        13 minutes ago      /bin/sh -c yum -y install vim                   57.2MB
    a8a64debc724        14 minutes ago      /bin/sh -c #(nop) WORKDIR /usr/local            0B
    c8a228cfb683        14 minutes ago      /bin/sh -c #(nop)  ENV MYPATH=/usr/local        0B
    a82dcc01fd28        14 minutes ago      /bin/sh -c #(nop)  MAINTAINER zxl               0B
    831691599b88        6 weeks ago         /bin/sh -c #(nop)  CMD ["/bin/bash"]            0B
    <missing>           6 weeks ago         /bin/sh -c #(nop)  LABEL org.label-schema.sc…   0B
    <missing>           6 weeks ago         /bin/sh -c #(nop) ADD file:84700c11fcc969ac0…   215MB

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200801140819492.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/2020080113531161.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk=,size_16,color_FFFFFF,t_70