SpringBoot应用部署到Docker上（docker-ce版本）

配置TCP远程连接（docker-maven-plugin插件连接的地址）

# 加上红色标识的部分
[root@localhost admin]# vim /lib/systemd/system/docker.service

[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
BindsTo=containerd.service
After=network-online.target firewalld.service containerd.service
Wants=network-online.target
Requires=docker.socket

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock -H unix:///var/run/docker.sock -H tcp://0.0.0.0:2375
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always

# Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
# Both the old, and new location are accepted by systemd 229 and up, so using the old location
# to make them work for either version of systemd.
StartLimitBurst=3

# Note that StartLimitInterval was renamed to StartLimitIntervalSec in systemd 230.
# Both the old, and new name are accepted by systemd 230 and up, so using the old name to make
# this option work for either version of systemd.
StartLimitInterval=60s

# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity

# Comment TasksMax if your systemd version does not support it.
# Only systemd 226 and above support this option.
TasksMax=infinity

# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes

# kill only the docker process, not all processes in the cgroup
KillMode=process

[Install]
WantedBy=multi-user.target

开放2375端口

# 开启防火墙端口
firewall-cmd --zone=public --add-port=2375/tcp --permanent
systemctl restart firewalld

配置私有仓库

配置daemon.json文件

[root@localhost admin]# vim /etc/docker/daemon.json

{
  "insecure-registries":["192.168.192.128:443"]
}

# 重启服务
systemctl daemon-reload
systemctl restart docker

然后下载registry镜像

[root@localhost admin]# docker pull registry
[root@localhost admin]# mkdir /usr/docker_registry_data
[root@localhost admin]# docker run -d -p 443:5000 -v /usr/docker_registry_data:/var/lib/registry registry

# 开启防火墙端口
firewall-cmd --zone=public --add-port=443/tcp --permanent
systemctl restart firewalld

新建SpringBoot工程

<build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <version>1.2.0</version>
                <configuration>
                    <!--Docker要求推送的映像名称以仓库的主机名和端口为前缀。例如，要推送my-image到registry.example.com，镜像需要标记为registry.example.com/my-image-->
                    <imageName>192.168.192.128:443/hello</imageName>
                    <!--基础镜像-->
                    <baseImage>java</baseImage>
                    <entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
                    <!-- copy the service's jar file from target into the root directory of the image -->
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <directory>${project.build.directory}</directory>
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                    <forceTags>true</forceTags>
                    <imageTags>
                        <imageTag>latest</imageTag>
                    </imageTags>
                </configuration>
            </plugin>
        </plugins>
    </build>

打包（注意，要保证服务器的Registry容器开启）

SET DOCKER_HOST=tcp://192.168.192.128:2375
mvn clean package -Dmaven.test.skip=true docker:build -DpushImageTag

 成功

 现在回来看镜像

启动（后台启动加上-d）

 访问

另一种方式：Dockerfile

在src/main下新建一个docker目录

 Dockerfile内容

# 基础镜像
FROM java:8
# 打包jar去向
ADD /hello-0.0.1-SNAPSHOT.jar /app.jar
# 暴露端口
EXPOSE 8081
# 启动命令
ENTRYPOINT ["java", "-jar", "/app.jar"]

pom文件修改如下：

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <version>1.2.0</version>
                <configuration>
                    <!--Docker要求推送的映像名称以注册表的主机名和端口为前缀。例如，要推送my-image到registry.example.com，镜像需要标记为registry.example.com/my-image-->
                    <imageName>192.168.192.128:443/hello-2</imageName>
                    <dockerDirectory>src/main/docker</dockerDirectory>
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <directory>${project.build.directory}</directory>
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                    <forceTags>true</forceTags>
                    <imageTags>
                        <imageTag>latest</imageTag>
                    </imageTags>
                </configuration>
            </plugin>
        </plugins>
    </build>

打包推送

SET DOCKER_HOST=tcp://192.168.192.128:2375
mvn clean package -Dmaven.test.skip=true docker:build -DpushImageTag

运行结果

 查看镜像