cd /usr/local/docker/
mkdir jenkins-docker
cd jenkins-docker

vi Dockerfile
# 以下是文件内容
FROM  jenkins/jenkins:lts

USER root
RUN mkdir -p /usr/local/ && \
	cd /usr/local/ && \
	curl -fsSL https://mirror.bit.edu.cn/apache/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz > /usr/local/apache-maven-3.6.3-bin.tar.gz && \
	tar xzf /usr/local/apache-maven-3.6.3-bin.tar.gz -C /usr/local/ && \
	rm -rf /usr/local/apache-maven-3.6.3-bin.tar.gz && \
	ln -s /usr/local/apache-maven-3.6.3/bin/mvn /bin/mvn && \
	ln -s /usr/local/apache-maven-3.6.3/bin/mvnyjp /bin/mvnyjp && \
	export PATH=/usr/local/apache-maven-3.6.3/bin:$PATH

USER jenkins

docker build -t jenkins-jiacs:lts . 

cat /etc/group | grep docker

# [root@localhost jenkins-docker]# cat /etc/group | grep docker
# docker:x:994:
# 我这里的是994，根据各自的实际值而定

# 启动容器之前先创建 /usr/local/docker/jenkins-docker/data 文件夹并赋予权限
# /usr/local/docker/jenkins-docker/config/settings.xml 该文件自行提供（可自定义私服等信息）
mkdir data
chmod -R 777 data

docker run -d -p 8080:8080 -p 50000:50000 \
    -v /usr/local/docker/jenkins-docker/data:/var/jenkins_home \
    -v /etc/localtime:/etc/localtime:ro \
    -v /var/run/docker.sock:/var/run/docker.sock \
    -v /etc/docker:/etc/docker \
    -v /usr/bin/docker:/usr/bin/docker \
    -v /usr/local/bin/docker-compose:/usr/local/bin/docker-compose \
    -v /usr/local/docker/jenkins-docker/config/settings.xml:/usr/local/apache-maven-3.6.3/conf/settings.xml \
    --group-add=994 \
    --name my-jenkins \
    jenkins-jiacs:lts
# 说明：
# 1. -v /usr/local/docker/jenkins-docker/data:/var/jenkins_home =》持久化Jenkins数据
# 2. -v /etc/localtime:/etc/localtime:ro  =》 设置Jenkins容器时间和宿主机一致
# 3. -v /etc/docker:/etc/docker =》 Jenkins容器中使用的docker为宿主机安装的docker，保证Jenkins部署的服务是在宿主机中启动的
# 4. -v /usr/local/bin/docker-compose:/usr/local/bin/docker-compose 如果宿主机安装了docker-compose，Jenkins容器需要使用的话可以加上该数据卷
# -v /usr/local/docker/jenkins-docker/config/settings.xml:/usr/local/apache-maven-3.6.3/conf/settings.xml
# --group-add=994 让启动的容器用户组设置为宿主机中docker的用户组，保证在Jenkins容器中有权限操作宿主机的docker命令

cd /usr/local/docker/jenkins-docker
vi jenkins-docker.yaml

version: '2' # 版本号不要修改，有些版本不支持group_add参数
services:
  jenkins:
    image: 'jenkins-jiacs:lts'
    container_name: my-jenkins
    # restart: always
    ports:
      - '8080:8080'
      - '50000:50000'
    group_add:
      - 994
    volumes:
      - ./data:/var/jenkins_home
      - /etc/localtime:/etc/localtime:ro
      - /var/run/docker.sock:/var/run/docker.sock
      - /etc/docker:/etc/docker
      - /usr/bin/docker:/usr/bin/docker
      - /usr/local/bin/docker-compose:/usr/local/bin/docker-compose
      - ./config/settings.xml:/usr/local/apache-maven-3.6.3/conf/settings.xml

docker-compose -f jenkins-docker.yaml up -d

docker ps 

docker exec -it 0d8b70ba5cec bash
# 查看Jenkins初始密码（在容器中执行）
cat /var/jenkins_home/secrets/initialAdminPassword

System.setProperty('org.apache.commons.jelly.tags.fmt.timeZone', 'Asia/Shanghai')