使用docker镜像的注意事项-重要

在dockerhub上下载了一个sentinel dashboard的镜像。因为之前看了好多文章说sentinel端口默认是8080，所以想当然的就按照8080配置负载均衡。结果死活访问不了。后来同事看了下dockerhub上的说明，原来打镜像的时候就打了对外的端口了

version: "3"
services:
  sentinel:
    image: herodotus/sentinel-dashboard:latest
    container_name: sentinel-dashboard
    environment:
      SENTINEL_ADMIN_USERNAME: herodotus
      SENTINEL_ADMIN_PASSWORD: herodotus
      INFLUXDB_URL: http://127.0.0.1:8086
      INFLUXDB_USERNAME: herodotus
      INFLUXDB_PASSWORD: herodotus
      INFLUXDB_DATABASE: sentinel
      NACOS_SERVER_ADDRESS: http://127.0.0.1:8848
      NACOS_CONFIG_DATA_ID_SUFFIX: -flow-rules
    ports:
      - "8858:8858"

没注意这个端口浪费好多时间