Original article, welcome to reprint. Reprint please specify: reprint from IT people story, thank you! Create a base Image (14)

This article mainly introduces the relevant information about the specific implementation of Docker Base Image creation, here provides detailed steps, friends who need to refer to github: github.com/limingios/d…

How to make a Base Image

There are two ways of base Image mentioned before: one is to get 1 through pull docker official website; the other is to get 1 through build. It must be done by base Image.

  • By pulling
docker pull hello-world
docker image ls
docker run hello-world
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  • 1. Create a file
 mkdir hello-world
 cd hello-world/
 vim hello.c
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2. Edit file C

#include<stdio.h>
int main()
{
        printf("Hello Docker wechat official account: Too many programming pits \n");
}
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3. Compile GCC

sudo yum install -y gcc
sudo yum install -y glibc-static
 gcc -static hello.c -o hello
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4. Create and edit Dockerfile

vim Dockfile
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FROM scratch
ADD hello /
CMD ["/hello"]                    
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  docker build -t liming/hello .           
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# View the layer
   docker history a4cb86cc8d6b     
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5. Run the Image

docker run liming/hello
docker container ls -a
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PS: Hello. C is written in C language, so we type it into an Image, which is actually an executable file. It actually depends on the host kernel, although it is small, it can also reflect the architecture of Docker. Tomcat actually their principle is the same as today’s baseImage hello program.