chore: add docker deployment

[gityh2021]

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chore

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增加Docker部署方式

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#34

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[gityh2021]

现在的思路是这样的：
docker-compose-up会创建一个默认的bridge网络:easy_note_default。
然后去查找easy_note_default这个网络的网关IP地址。
将这网关IP地址作为etcd、mysql、jaeger的ip地址写到Dockerfile里面。
容器内的kitex服务注册发现不能用本地地址，随机发一个udp包去拿到容器ip，将容器ip写入etcd做服务注册发现。