Based on https://github.com/danshan/docker-shadowsocks-client, add privoxy as a HTTP proxy through SOCK5 proxy of shaodwsocks.

* How to use?
Simply run(replace related args with your custom value)

```sh
sudo docker run -d -p 1086:1086 tomjamescn/docker-proxy-ss SERVER_ADDR SERVER_PORT PASSWORD METHOD 1086
```