通过dockerfile build一个base image，在上面运行一个c程序

首先

1、创建一个目录。

2、然后创建一个c写的小程序，并且gcc编译好。

3、创建一个Dockerfile

FROM scratch #scrath表示运行在内核之上ADD soeasy2 /   #增加文件CMD ["/soeasy2"]#运行程序

4、build image

5、运行image

[root@localhost docker_test]# lsDockerfile  soeasy2  soeasy.c  soeasy.sh[root@localhost docker_test]# vim Dockerfile [root@localhost docker_test]# docker build -t bigni/test1 .   #-t表示tag  最后的点号，表示在当前目录寻找DockerfileSending build context to Docker daemon  865.8kBStep 1/3 : FROM scratch ---> Step 2/3 : ADD soeasy2 / ---> 3ec8199c2855Step 3/3 : CMD ["/soeasy2"] ---> Running in 7fcaf3239425Removing intermediate container 7fcaf3239425 ---> f5620b92331cSuccessfully built f5620b92331cSuccessfully tagged bigni/test1:latest[root@localhost docker_test]# docker image lsREPOSITORY          TAG                 IMAGE ID            CREATED             SIZEbigni/test1         latest              f5620b92331c        12 seconds ago      861kBubuntu              14.04               2c5e00d77a67        7 weeks ago         188MBcentos              latest              9f38484d220f        3 months ago        202MBhello-world         latest              fce289e99eb9        6 months ago        1.84kB[root@localhost docker_test]# docker run f5620b92331c #运行imagedocker so easy[root@localhost docker_test]# cat Dockerfile FROM scratchADD soeasy2 /CMD ["/soeasy2"][root@localhost docker_test]# cat soeasy.c #include
     
      int main(){ printf("docker so easy\n");}[root@localhost docker_test]#
     

 

把程序改成shell脚本，然后还是在linux kernel上构建base image，结果程序运行不起来，改成在centos image上构建，则运行成功。

[root@localhost docker_test]# vim soeasy.sh [root@localhost docker_test]# cat soeasy.sh #!/bin/bashecho "docker so easy !"[root@localhost docker_test]# vim Dockerfile [root@localhost docker_test]# cat Dockerfile FROM scratchADD soeasy.sh /CMD ["/soeasy.sh"][root@localhost docker_test]# docker build -t bigni/test2 .Sending build context to Docker daemon  865.8kBStep 1/3 : FROM scratch ---> Step 2/3 : ADD soeasy.sh / ---> 93d27c3e1b5bStep 3/3 : CMD ["/soeasy.sh"] ---> Running in 4af6bd362099Removing intermediate container 4af6bd362099 ---> e2b5b08cc31cSuccessfully built e2b5b08cc31cSuccessfully tagged bigni/test2:latest[root@localhost docker_test]# docker image lsREPOSITORY          TAG                 IMAGE ID            CREATED              SIZEbigni/test2         latest              e2b5b08cc31c        About a minute ago   36Bbigni/test1         latest              f5620b92331c        18 minutes ago       861kBubuntu              14.04               2c5e00d77a67        7 weeks ago          188MBcentos              latest              9f38484d220f        3 months ago         202MBhello-world         latest              fce289e99eb9        6 months ago         1.84kB[root@localhost docker_test]# docker run e2b5b08cc31c #运行imagestandard_init_linux.go:211: exec user process caused "no such file or directory"[root@localhost docker_test]# vim Dockerfile [root@localhost docker_test]# cat Dockerfile FROM centos #改成centosADD soeasy.sh /CMD ["/soeasy.sh"][root@localhost docker_test]# docker build -t bigni/test3 .Sending build context to Docker daemon  865.8kBStep 1/3 : FROM centos ---> 9f38484d220fStep 2/3 : ADD soeasy.sh / ---> 9ae6ad56171aStep 3/3 : CMD ["/soeasy.sh"] ---> Running in b53205a3eb75Removing intermediate container b53205a3eb75 ---> cfbfd0a29d1cSuccessfully built cfbfd0a29d1cSuccessfully tagged bigni/test3:latest[root@localhost docker_test]# docker image lsREPOSITORY          TAG                 IMAGE ID            CREATED             SIZEbigni/test3         latest              cfbfd0a29d1c        13 seconds ago      202MBbigni/test2         latest              e2b5b08cc31c        5 minutes ago       36Bbigni/test1         latest              f5620b92331c        22 minutes ago      861kBubuntu              14.04               2c5e00d77a67        7 weeks ago         188MBcentos              latest              9f38484d220f        3 months ago        202MBhello-world         latest              fce289e99eb9        6 months ago        1.84kB[root@localhost docker_test]# docker run cfbfd0a29d1cdocker so easy ![root@localhost docker_test]#