Build a Base Image from Scratch¶
we will build a hello world base image from Scratch.
System Environment¶
Docker running on centos 7 and the version
$ docker version
Client:
Version: 17.12.0-ce
API version: 1.35
Go version: go1.9.2
Git commit: c97c6d6
Built: Wed Dec 27 20:10:14 2017
OS/Arch: linux/amd64
Server:
Engine:
Version: 17.12.0-ce
API version: 1.35 (minimum version 1.12)
Go version: go1.9.2
Git commit: c97c6d6
Built: Wed Dec 27 20:12:46 2017
OS/Arch: linux/amd64
Experimental: false
install requirements:
$ sudo yum install -y gcc glibc-static
Create a Hello world¶
create a hello.c and save
$ pwd
/home/vagrant/hello-world
[vagrant@localhost hello-world]$ more hello.c
#include<stdio.h>
int main()
{
printf("hello docker\n");
}
[vagrant@localhost hello-world]$
Compile the hello.c source file to an binary file, and run it.
$ gcc -o hello -static hello.c
$ ls
Dockerfile hello hello.c
$ ./hello
hello docker
Build Docker image¶
Create a Dockerfile like this:
$ more Dockerfile
FROM scratch
ADD hello /
CMD ["/hello"]
build image through:
$ docker build -t xiaopeng163/hello-world .
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
xiaopeng163/hello-world latest 78d57d4588e3 4 seconds ago 844kB