在sentinel官方下载jar包即可运行，但是在部署的时候一个一个的启动jar包很不方便，制作成镜像方便部署和管理。

1）直接运行

# 修改端口号，默认是8080

java -jar sentinel-dashboard-1.7.0.jar --server.port=9090

2）制作镜像

准备工作

cd /home/docker/sentinel

ls

sentinel-dashboard-1.7.0.jar

jdk-8u144-linux-x64.tar.gz

vim Dockerfile

FROM centos:7

MAINTAINER pader "bartggg@163.com"

RUN set -x \

    && mkdir -p /opt/sentinel \

    && cd /opt/sentinel \

    && mkdir -p logs \

	&& cd logs \

	&& touch start.out \

	&& ln -sf /dev/stdout start.out \

	&& ln -sf /dev/stderr start.out \

    && ln -snf /usr/share/zoneinfo/$TIME_ZONE /etc/localtime && echo '$TIME_ZONE' > /etc/timezone \

# 允许挂载该目录

VOLUME /opt/sentinel/logs 

# 添加jdk、sentinel的jar包

ADD jdk-8u144-linux-x64.tar.gz /opt

ADD sentinel-dashboard-1.7.0.jar /opt/sentinel/sentinel-dashboard.jar

# set environment

ENV BASE_DIR="/opt/sentinel" \

    JAVA_HOME="/opt/jdk1.8.0_144" \

    JAVA="/opt/jdk1.8.0_144/bin/java" \

    JVM_XMS="512m" \

    JVM_XMX="512m" \

    JVM_XMN="256m" \

    JVM_MS="32m" \

    JVM_MMS="20m" \

    TIME_ZONE="Asia/Shanghai" \

    SERVER_PORT="8080"

ENV JAVA_OPT="-jar ${BASE_DIR}/sentinel-dashboard.jar -server -Xms=${JVM_XMS} -Xmx=${JVM_XMX} -Xmn=${JVM_XMN} -XX:MetaspaceSize=${JVM_MS} -XX:MaxMetaspaceSize=${JVM_MMS} --server.port=${SERVER_PORT}"

WORKDIR $BASE_DIR

EXPOSE 8080

CMD echo "$JAVA ${JAVA_OPT}" > ${BASE_DIR}/logs/start.out && nohup $JAVA ${JAVA_OPT} >> ${BASE_DIR}/logs/start.out 2>&1 < /dev/null

构建&运行：

docker build -t bart/sentinel:1.7.0 .

# 查看镜像

docker images

# 运行镜像

docker run -d \

--name sentinel \

--restart always \

-p 8080:8080 \

-v /home/gwc/docker/sentinel:/opt/sentinel/logs \

bart/sentinel:1.7.0

# 测试

curl http://localhost:8080

# 导出镜像

docker save -o /home/gwc/docker/sentinel/sentinel.tar bart/sentinel:1.7.0

# 导入镜像

docker load -i /home/gwc/docker/sentinel/sentinel.tar