docker 部署netcore（关于Jenkins + Docker + ASP.NET Core自动化部署的问题避免踩坑）

yum update

yum remove docker \
           docker-client \
           docker-client-latest \
           docker-common \
           docker-latest \
           docker-latest-logrotate \
           docker-logrotate \
           docker-engine

yum install -y yum-utils

yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

yum install -y docker-ce docker-ce-cli containerd.io

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["这里填入你的加速器url"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

docker info

docker run hello-world

vim Dockerfile

FROM jenkins/jenkins:lts-jdk11
USER root
RUN apt-get update && apt-get install -y apt-transport-https \
       ca-certificates curl gnupg2 \
       software-properties-common
RUN curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -
RUN apt-key fingerprint 0EBFCD88
RUN add-apt-repository \
       "deb [arch=amd64] https://download.docker.com/linux/debian \
       $(lsb_release -cs) stable"

# 安装 docker-ce-cli 才能在 jenkins 中发送 docker 命令到 docker daemon
RUN apt-get update && apt-get install -y docker-ce-cli

docker build . -t myjenkins

systemctl restart docker

# 1. 打开 sysctl.conf
vim /etc/sysctl.conf

# 2.添加下面一行
net.ipv4.ip_forward=1

# 3.重启 network 和 docker
systemctl restart network && systemctl restart docker

docker run \
  --name jenkins \                                      # 给容器起个名字，叫做 jenkins
  --detach \                                            # 以后台分离模式运行
  --publish 8080:8080 \                                 # host 8080端口映射容器8080端口
  --publish 50000:50000 \                               # host 50000端口映射容器50000端口
  --volume jenkins-data:/var/jenkins_home \             # 卷 jenkins-data 映射容器路径/var/jenkins_home，这样就可以在host上直接修改jenkins配置了
  --volume /var/run/docker.sock:/var/run/docker.sock \  # host 上的docker sock映射容器的docker sock，这样容器内的docker命令都会发送到host上的docker中来执行
  myjenkins                                             # 使用刚刚构建的镜像 myjenkins 来运行容器

docker run \
  --name jenkins \
  --detach \
  --publish 8080:8080 \
  --publish 50000:50000 \
  --volume jenkins-data:/var/jenkins_home \
  --volume /var/run/docker.sock:/var/run/docker.sock \
  myjenkins

vim /var/lib/docker/volumes/jenkins-data/_data/hudson.model.UpdateCenter.xml

<?xml version='1.1' encoding='UTF-8'?>
<sites>
  <site>
    <id>default</id>
    <!--原 url： https://updates.jenkins.io/update-center.json -->
    <url>https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json</url>
  </site>
</sites>

docker restart jenkins

cat /var/lib/docker/volumes/jenkins-data/_data/secrets/initialAdminPassword

image_tag=`date +%Y%m%d%H%M%S`;
echo $image_tag;

# build镜像并且打上tag
docker build -t myapp:$image_tag .;
docker images;

# 停止并删除旧版 myapp container
CID=$(docker ps | grep "myapp" | awk '{print $1}')
echo $CID
if [ "$CID" != "" ];then
  docker stop $CID
  docker rm $CID
fi

# 把刚刚build出来的镜像跑起来
docker run -p 5000:80 --name myapp -d myapp:$image_tag;
docker ps -a;
docker logs myapp;

CONTAINER ID   IMAGE                  COMMAND                  CREATED             STATUS             PORTS                                                                                      NAMES
e167a135f7a0   myapp:20210512152453   "dotnet MyAspNetCore…"   2 minutes ago       Up 2 minutes       0.0.0.0:5000->80/tcp, :::5000->80/tcp                                                      myapp
e83a2570c334   myjenkins              "/sbin/tini -- /usr/…"   About an hour ago   Up About an hour   0.0.0.0:8080->8080/tcp, :::8080->8080/tcp, 0.0.0.0:50000->50000/tcp, :::50000->50000/tcp   jenkins