该项目是一个入门CICD-Demo,它由以下几部分组成:
通过这个Demo,你可以:
项目地址:CICD-Blog
测试网址:www.ningyu.ink
这个Dockerfile分为四个构建阶段:
# syntax=docker/dockerfile:1
FROM eclipse-temurin:17-jdk-jammy as base
WORKDIR /blog
COPY .mvn/ .mvn
COPY mvnw pom.xml ./
RUN chmod +x mvnw
RUN ./mvnw dependency:resolve
COPY src ./src
FROM base as dev
EXPOSE 8080
RUN chmod +x mvnw
CMD ["./mvnw", "spring-boot:run"]
FROM base as build
RUN ./mvnw package
FROM eclipse-temurin:17-jre-jammy as prod
EXPOSE 8080
COPY --from=build /blog/target/blog-*.jar /blog.jar
CMD ["java", "-jar", "/blog.jar"]
该文件包含两个profiles:
docker compose --profiles dev up -d --build
在本地运行docker compose --profiles prod up -d --build
在服务器运行services:
blog-dev:
build:
context: .
target: dev
container_name: blog
ports:
- "8080:8080"
environment:
- MYSQL_URL=jdbc:mysql://mysql/blog?serverTimezone=Asia/Shanghai
volumes:
- ./:/blog
networks:
mysql-net:
depends_on:
- mysql-dev
profiles:
- dev
blog-prod:
build:
context: .
target: prod
container_name: blog
environment:
- MYSQL_URL=jdbc:mysql://mysql/blog?serverTimezone=Asia/Shanghai
volumes:
- ./:/blog
networks:
mysql-net:
nginx-net:
depends_on:
- mysql-prod
profiles:
- prod
mysql-dev:
image: mysql:8.0
container_name: mysql
ports:
- "3306:3306"
environment:
- MYSQL_ROOT_PASSWORD=123456
- MYSQL_DATABASE=blog
volumes:
- mysql_data:/var/lib/mysql
- mysql_config:/etc/mysql/conf.d
- ./sql/init.sql:/docker-entrypoint-initdb.d/init.sql
networks:
mysql-net:
profiles:
- dev
mysql-prod:
image: mysql:8.0
container_name: mysql
environment:
- MYSQL_ROOT_PASSWORD=123456
- MYSQL_DATABASE=blog
volumes:
- mysql_data:/var/lib/mysql
- mysql_config:/etc/mysql/conf.d
- ./sql/init.sql:/docker-entrypoint-initdb.d/init.sql
networks:
mysql-net:
profiles:
- prod
nginx-dev:
image: nginx
container_name: nginx
ports:
- "80:80"
environment:
- NGINX_HOST=ningyu.ink
- NGINX_PORT=80
volumes:
- ./nginx/templates:/etc/nginx/templates
- ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
networks:
nginx-net:
profiles:
- dev
nginx-prod:
image: nginx
container_name: nginx
ports:
- "80:80"
environment:
- NGINX_HOST=ningyu.ink
- NGINX_PORT=80
volumes:
- ./nginx/templates:/etc/nginx/templates
- ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
networks:
nginx-net:
profiles:
- prod
volumes:
mysql_data:
mysql_config:
networks:
mysql-net:
driver: bridge
nginx-net:
driver: bridge
MySQL的compose.yml构建语法是这样的:
mysql-prod:
image: mysql:8.0
container_name: mysql
environment:
- MYSQL_ROOT_PASSWORD=123456
- MYSQL_DATABASE=blog
volumes:
- mysql_data:/var/lib/mysql
- mysql_config:/etc/mysql/conf.d
- ./sql/init.sql:/docker-entrypoint-initdb.d/init.sql
networks:
mysql-net:
profiles:
- prod
它做了以下事情:
MYSQL_ROOT_PASSWORD
指定了root密码MYSQL_DATABASE
指定了容器运行后需要创建的数据库/sql/init.sql
的初始化脚本,该脚本用于在数据库中创建应用需要的表可以看到application.yml内容是这样的:
server:
port: 8080
spring:
application:
name: blog
datasource:
username: ${MYSQL_USER:root}
password: ${MYSQL_PASSWORD:123456}
url: ${MYSQL_URL:jdbc:mysql://localhost/blog?serverTimezone=Asia/Shanghai}
driver-class-name: com.mysql.cj.jdbc.Driver
mybatis:
mapper-locations: classpath:mapper/*.xml
其中通过${}
读取的环境变量值都是在compose.yml中定义的,这极大增强了灵活性。
GitHub Action通过.github/workflows
下的deploy.yml
起作用,其文件内容是这样的:
name: Deploy
on:
push:
branches:
- master
jobs:
deploy:
runs-on: ubuntu-latest
steps:
- name: Deploy to tencent server
uses: appleboy/ssh-[email protected]
with:
host: ${{ secrets.REMOTE_HOST}}
key: ${{ secrets.SERVER_SSH_KEY }}
username: ${{ secrets.REMOTE_USER }}
script: |
# 切换到主目录
cd ~ || exit
# 判断是否安装了Docker,如果没有则使用官方提供的脚本安装Docker
if ! command -v docker &> /dev/null ; then
curl -fsSL https://get.docker.com -o get-docker.sh
sh get-docker.sh
fi
# 判断是否拉拉取了代码,没有拉取则拉取
if [ ! -d "./blog" ]; then
git clone https://github.com/chinesecooly/blog.git
fi
# 进入工作目录
cd blog || exit
# 更新代码
git pull
# 运行prod环境下的构建,并且每次都重新构建镜像
docker compose --profile prod up -d --build
它的作用如下:
with
语句中指定的),这三个参数存储在以下位置,需要根据自己的服务器配置。docker compose --profile prod up -d --build
命令部署项目,--profile
选项指定了选取的profile
,-d
选项指定了容器在后台运行,--build
选项指定了每次运行这条指令时都重新构建镜像,这保证了我们每次更新的代码都能署到服务器上以下Controller是该项目提供的一个测试Controller,他完成了一次接收请求、操作数据库、做出响应的过程:
@Slf4j
@RestController
@RequestMapping("/test")
public class TestController {
@Resource
private TestMapper testMapper;
@GetMapping("/log")
public Result log() {
Test test = new Test();
test.setMsg("a get request");
test.setData(LocalDateTime.now());
testMapper.insert(test);
return Result.success(test);
}
}
项目部署后访问一下是这样的:
我们在dev
修改一下代码:
@Slf4j
@RestController
@RequestMapping("/test")
public class TestController {
@Resource
private TestMapper testMapper;
@GetMapping("/log")
public Result log() {
Test test = new Test();
test.setMsg("a get request after one push");
test.setData(LocalDateTime.now());
testMapper.insert(test);
return Result.success(test);
}
}
合并到master
并推送,等待几秒再次访问一下:
以下是GitHub Actions两次执行的记录:
通过本文你可以扩展更复杂的应用场景,如有不明白或建议,可留言联系我,如果可以的话点个关注,谢谢。