docker自行构建jenkins

1.dockerfile。yum clean 和yum makecache 是yum jenkins.时会报错.initscripts是为了在容器中执行jenkins start.

&& tail -f /dev/null 是为了保证容器启动后不立即退出。

FROM docker.io/centos:latest
MAINTAINER <FeigerLan>
RUN yum install -y java-1.8.0 && yum install -y wget && yum install -y initscripts
RUN echo "nameserver 8.8.8.8" >> /etc/resolv.conf
RUN wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
RUN rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
RUN yum clean all
RUN yum makecache && yum install jenkins -y
RUN sed -i 's/JENKINS_PORT="8080"/JENKINS_PORT="49000"/' /etc/sysconfig/jenkins
RUN ./etc/init.d/jenkins restart
CMD /etc/init.d/jenkins start && tail -f /dev/null

注意。区别 RUN , CMD作用

构建命令：

docker build -t docker.io/centos:jenkins04 ./

容器运行命令：

docker run -dit --name jenkins04 -p 8088:49000 centos:jenkins04

效果：

[root@localhost jenkins_dockerfile]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                     NAMES
fcc8a1da92ff        centos:jenkins04    "/bin/sh -c '/etc/..."   21 minutes ago      Up 21 minutes       0.0.0.0:8091->49000/tcp   jenkins04