davinci-docker: A Dockerfile repository from kisshua

完整步骤

git clone https://github.com/edp963/davinci-docker.git
cd /d davinci-docker
docker build -t="edp963/davinci:v0.3.0-beta.4" .
docker-compose up -d

原理分析

制作davinci docker镜像

1. Dockfile分析

FROM java:8-jre

LABEL MAINTAINER="edp_support@groups.163.com"

# 从github上下载分发包并解压

RUN cd / \
	&& mkdir -p /opt/davinci\
	&& wget https://github.com/edp963/davinci/releases/download/v0.3.0-beta.4/davinci-assembly_3.0.1-0.3.0-SNAPSHOT-dist-beta.4.zip \
	&& unzip davinci-assembly_3.0.1-0.3.0-SNAPSHOT-dist-beta.4.zip -d /opt/davinci

# 将phantomjs打包到镜像

ADD phantomjs-2.1.1 /opt/phantomjs-2.1.1

# 数据库初始化脚本，等待数据库就绪后启动spring boot

ADD bin/start.sh /opt/davinci/bin/start.sh

# docker镜像是静态的，因此配置文件中的配置需要用环境变量传递，详见12factor
# https://12factor.net/zh_cn/

ADD config/application.yml /opt/davinci/config/application.yml

# 预设davinci必备的两个环境变量
ENV DAVINCI3_HOME /opt/davinci
ENV PHANTOMJS_HOME /opt/phantomjs-2.1.1

WORKDIR /opt/davinci

# 为什么使用CMD而不是ENTRYPOINT? 因为CMD可以在docker run的时候被替代
# 在使用compose或K8S时，很有可能要在启动前执行其它脚本，而不是直接运行
# start-server.sh
# 在单独docker run且不附加任何命令时，以下命令默认执行

CMD ["./bin/start-server.sh"]

EXPOSE 8080

start.sh

#!/bin/bash

# 将sql脚本经过mysql8兼容处理后，写入/initdb目录
# /initdb 目录是与mysql容器共享目录
# mysql容器将在启动时执行 /docker-entrypoint-initdb.d 中的所有脚本

cd /opt/davinci/bin/
mkdir /initdb
cat davinci.sql > /initdb/davinci.sql
sed -i '1i\SET GLOBAL log_bin_trust_function_creators = 1;' /initdb/davinci.sql


# 由于docker compose中启动顺序管理交给了容器自己
# 详见 https://docs.docker.com/compose/startup-order/
# 因此我们需要用curl探测mysql端口，当接受数据字节大于0时认为
# 数据库可以连通，接下来我们执行davinci spring boot主程序
set -e

host="$1"
shift
cmd="$@"

until [ $(curl -I -m 10 -o /dev/null -s -w %{size_download} $host) -gt 0 ]; do
  >&2 echo "database is unavailable - sleeping"
  sleep 1
done

source $cmd

2. 构建镜像

docker build -t="edp963/davinci:v0.3.0-beta.4" .

3. docker compose

version: '3.6'
services:
  davinci:
    environment:
      - MYSQL_CONN=jdbc:mysql://mysql:3306/davinci0.3?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true
      - DB_USER=root
      - DB_PWD=abc123123
      - MAIL_HOST=smtp.163.com
      - MAIL_PORT=465
      - MAIL_STMP_SSL=true
      - MAIL_USER=xxxxxx@163.com
      - MAIL_PWD=xxxxxxxx
      - MAIL_NICKNAME=davinci
    image: "edp963/davinci:v0.3.0-beta.4"
    ports:
      - 58080:8080
    # 等待mysql就绪后再启动spring boot主程序
    command: ["./bin/start.sh", "mysql:3306", "--", "start-server.sh"]
    restart: always
    volumes:
      - davinci_logs:/opt/davinci/logs
      - davinci_userfiles:/opt/davinci/userfiles
      - davinci_initdb:/initdb  #共享给mysql作数据初始化
  mysql:
    image: mysql:8
    restart: always
    environment:
      - MYSQL_ROOT_PASSWORD=abc123123
      - MYSQL_DATABASE=davinci0.3
    volumes:
      - mysql_data:/var/lib/mysql
      # 初始化脚本源自davinic容器的initdb目录
      - davinci_initdb:/docker-entrypoint-initdb.d:ro   

volumes:
  davinci_userfiles:
  davinci_logs:
  davinci_initdb:
  mysql_data:

小提示：docker-compose.yml环境变量配置K=V中不能出现空格，V也不能用双引号包裹

4. docker compose启动

docker-compose up -d

5.仅docker启动(使用外部数据库)

docker run -p 58081:8080 -e MYSQL_CONN="jdbc:mysql://yourmysqlserver:3306/davinci0.3?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true" \
-e DB_USER="root" -e DB_PWD="pwd" \
-e MAIL_HOST="smtp.163.com"  -e MAIL_PORT="465" -e MAIL_STMP_SSL="true" \
-e MAIL_USER="xxxxxx@163.com"  -e MAIL_PWD="xxxxxxx" \
-e MAIL_NICKNAME="davinci_sys" \
edp963/davinci:v0.3.0-beta.4

kisshua/davinci-docker

完整步骤

原理分析

制作davinci docker镜像