通过Dockerfile来进行Docker的镜像制作,本文章只演示镜像打包

• FROM 使用的镜像，如果没有则会拉取
• MAINTAINER 作者
• COPY 拷贝文件至镜像指定位置
• RUN 镜像制作时执行的命令
• ADD：将文件复制到容器中，支持URL和解压缩
• CMD：指定容器启动时要执行的命令
• ENTRYPOINT：指定容器启动时要执行的命令，与CMD不同的是，ENTRYPOINT不会被docker run命令行参数覆盖
• ENV：设置环境变量
• ARG：定义构建参数

准备基础环境

拉取centos7镜像:

[root@master docker]# docker pull centos:7

pull下载过慢可下载tar包并进行导入

[root@master ~]# wget https://file.lolicp.com/docker/images/centos_7.tar
[root@master ~]# docker load -i centos_7.tar

构建环境

Mysql

编辑Dockerfile文件内容

[root@master mysql]# vim Dockerfile 
FROM docker.io/centos:7
MAINTAINER <admin@lolicp.com>
COPY mysql_57/ /usr/local/mysql_57/
RUN yum -y install openssl-libs

开始build构建Mysql镜像

[root@master mysql]# docker build -t mysql:v5.7.29 ./
Sending build context to Docker daemon 1.694 GB
Step 1/4 : FROM docker.io/centos:7
 ---> b5b4d78bc90c
Step 2/4 : MAINTAINER <admin@lolicp.com>
 ---> Using cache
 ---> 06fa3abfc1cf
Step 3/4 : COPY mysql_57/ /usr/local/mysql_57/
 ---> Using cache
 ---> 7e7a1a1a78c4
Step 4/4 : RUN yum -y install openssl-libs
 ---> Using cache
 ---> 7d9d2bac5b99
Successfully built 7d9d2bac5b99

Nginx

编辑Dockerfile文件内容

[root@master nginx]# vim Dockerfile 
FROM docker.io/centos:7
MAINTAINER <admin@lolicp.com>
COPY nginx/ /usr/local/nginx/
RUN yum -y install gd-devel pcre-devel openssl openssl-devel

开始build构建Nginx镜像

[root@master nginx]# docker build -t nginx:v1.17.10 ./

PHP

编辑Dockerfile文件内容

[root@master php]# vim Dockerfile
FROM docker.io/centos:7
MAINTAINER <admin@lolicp.com>
COPY php72/ /usr/local/php72/
RUN yum -y install epel-release && yum -y install libpng autoconf libxslt libjpeg-turbo freetype oniguruma-devel

开始build构建PHP镜像

[root@master php]# docker build -t php:v7.2 ./

查看结果

查看images列表

[root@master nginx]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
nginx               v1.18               20dabe80ad0c        2 minutes ago       306 MB
php                 v7.2                1d279f0043d9        31 minutes ago      520 MB
mysql               v5.7.29             7d9d2bac5b99        49 minutes ago      1.97 GB
centos              7                   b5b4d78bc90c        4 weeks ago         203 MB
docker.io/centos    7                   b5b4d78bc90c        4 weeks ago         203 MB

通过docker-compose启动容器

配置docker-compose

[root@master ~]# wget -O /usr/local/bin/docker-compose https://file.lolicp.com/docker/sbin/docker-compose
[root@master ~]# chmod +x /usr/local/bin/docker-compose

编辑启动文件并进行配置，根据实际需要进行配置

由于配置是根据自己实际需要进行修改的，此教程仅供参考。如果根据教程来你会缺少配置文件及启动脚本。

[root@master conf]# vim WebSite_All.yaml 
version: '2.3'
services:
    nginx:
      image: nginx:v1.18
      container_name: nginx
      cpu_count: 1
      cpu_percent: 50
      cpus: 0.5
      cpu_shares: 73
      cpuset: 0,1
      mem_limit: 512m
      memswap_limit: 1024m
      mem_reservation: 125m
      shm_size: 64M
      hostname: nginx-server
      command: /bin/bash /usr/local/bin/nginxd start
      ports:
        - "80:80"
        - "443:443"
      volumes:
        - /data/nginx/sbin/nginxd.sh:/usr/local/bin/nginxd
        - /data/nginx/wwwroot:/wwwroot/
        - /data/nginx/conf/nginx.conf:/usr/local/nginx/conf/nginx.conf
        - /data/nginx/ssl/:/usr/local/nginx/ssl/
        - /data/nginx/vhost/:/usr/local/nginx/vhost/
        - /dev/shm/php-fpm.sock:/dev/shm/php-fpm.sock
        - /etc/hosts:/etc/hosts
      networks:
         website:
            ipv4_address: 10.173.68.88
    mysql_db:
      container_name: mysql_57
      image: mysql:v5.7.29
      cpu_count: 1
      cpu_percent: 50
      cpus: 1
      cpu_shares: 73
      cpuset: 0,1
      mem_limit: 1024m
      memswap_limit: 2049m
      mem_reservation: 248m
      shm_size: 64M
      command: /bin/bash /usr/local/mysql_57/sbin/mysqld.sh 
      hostname: mysql-server
      volumes:
        - /data/mysql/data:/usr/local/mysql_57/data
        - /data/mysql/conf:/usr/local/mysql_57/conf
        - /data/mysql/logs:/usr/local/mysql_57/logs
        - /data/mysql/sbin:/usr/local/mysql_57/sbin
        - /data/mysql/backup:/usr/local/mysql_57/backup
      networks:
         website:
            ipv4_address: 10.173.68.77
    php_fpm:
      container_name: php
      image: php:v7.2
      cpu_count: 1
      cpu_percent: 50
      cpus: 1
      cpu_shares: 73
      cpuset: 0,1
      mem_limit: 1024m
      memswap_limit: 1621m
      mem_reservation: 248m
      shm_size: 64M
      hostname: php-server
      command: /bin/bash /usr/local/bin/phpd start
      volumes:
       - /data/php/sbin/phpd:/usr/local/bin/phpd
       - /data/php/php.ini:/usr/local/php72/php.ini
       - /data/php/ext/:/usr/local/php72/lib/php/extensions/no-debug-non-zts-20170718/
       - /data/php/etc/:/usr/local/php72/etc/
       - /data/nginx/wwwroot:/wwwroot/
       - /dev/shm/php-fpm.sock:/dev/shm/php-fpm.sock
       - /etc/hosts:/etc/hosts
      networks:
         website:
            ipv4_address: 10.173.68.99
networks:
   website:
      ipam:
         config:
         - subnet: 10.173.68.0/24
           gateway: 10.173.68.1

启动容器

[root@master conf]# docker-compose -f /data/docker/conf/WebSite_All.yaml up -d
Creating network "conf_website" with the default driver
Creating nginx    ... done
Creating php      ... done
Creating mysql_57 ... done

上传镜像至dockerhub

登陆docker

[root@master conf]# docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one
Username: ymcc
Password: 
Login Succeeded

更改tag为用户名开头

[root@master conf]# docker tag mysql:v5.7.29 ymcc/mysql:v5.7.29
[root@master conf]# docker tag php:v7.2 ymcc/php:v7.2 
[root@master conf]# docker tag nginx:v1.18 ymcc/nginx:v1.18

上传镜像

[root@master conf]# docker push ymcc/mysql:v5.7.29
[root@master conf]# docker push ymcc/php:v7.2
[root@master conf]# docker push ymcc/nginx:v1.18