Added shadowsocks-python docker image

Signed-off-by: Teddysun <i@teddysun.com>

docker/shadowsocks-python/.dockerignore

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+.dockerignore
+README.md

docker/shadowsocks-python/Dockerfile

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+# Dockerfile for Shadowsocks-Python based alpine
+# Copyright (C) 2018 Teddysun <i@teddysun.com>
+# Reference URL:
+# https://github.com/shadowsocks/shadowsocks/tree/master
+
+FROM python:3.6-alpine
+LABEL maintainer="Teddysun <i@teddysun.com>"
+
+RUN runDeps="\
+		unzip \
+		wget \
+		libsodium-dev \
+		openssl \
+		mbedtls \
+	"; \
+	set -ex \
+	&& apk add --no-cache --virtual .build-deps ${runDeps} \
+	&& cd /tmp \
+	&& wget -O shadowsocks.zip https://github.com/shadowsocks/shadowsocks/archive/master.zip \
+	&& unzip shadowsocks.zip \
+	&& cd shadowsocks-master \
+	&& python setup.py install \
+	&& cd /tmp \
+	&& rm -fr shadowsocks.zip shadowsocks-master 
+
+COPY config_sample.json /etc/shadowsocks-python/config.json
+VOLUME /etc/shadowsocks-python
+
+USER nobody
+
+CMD [ "ssserver", "-c", "/etc/shadowsocks-python/config.json" ]

docker/shadowsocks-python/README.md

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+## Shadowsocks-Python Docker Image by Teddysun
+
+[Shadowsocks][1] is a lightweight secured socks5 proxy for embedded devices and low end boxes.
+It is a port of [Shadowsocks][2] created by @clowwindy .
+
+Docker images are built for quick deployment in various computing cloud providers.
+For more information on docker and containerization technologies, refer to [official document][3].
+
+## Prepare the host
+
+If you need to install docker by yourself, follow the [official installation guide][4].
+
+## Pull the image
+
+```bash
+$ docker pull teddysun/shadowsocks-python
+```
+
+This pulls the latest release of shadowsocks-python.
+
+It can be found at [Docker Hub][5].
+
+## Start a container
+
+You **must create a configuration file**  `/etc/shadowsocks-python/config.json` in host at first, and sample:
+
+```
+{
+    "server":"0.0.0.0",
+    "server_port":9000,
+    "local_address":"127.0.0.1",
+    "local_port":1080,
+    "password":"password0",
+    "timeout":120,
+    "method":"aes-256-cfb",
+    "fast_open":true
+}
+```
+
+This container with sample configuration `/etc/shadowsocks-python/config.json`
+
+There is an example to start a container that listens on `9000` (both TCP and UDP):
+
+```bash
+$ docker run -d -p 9000:9000 -p 9000:9000/udp --name ss -v /etc/shadowsocks-python:/etc/shadowsocks-python teddysun/shadowsocks-python
+```
+
+**Note**: The port number must be same as configuration.
+
+[1]: https://github.com/shadowsocks/shadowsocks/tree/master
+[2]: https://shadowsocks.org/en/index.html
+[3]: https://docs.docker.com/
+[4]: https://docs.docker.com/install/
+[5]: https://hub.docker.com/r/teddysun/shadowsocks-python/

docker/shadowsocks-python/config_sample.json

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+{
+    "server":"0.0.0.0",
+    "server_port":9000,
+    "local_address":"127.0.0.1",
+    "local_port":1080,
+    "password":"password0",
+    "timeout":120,
+    "method":"aes-256-cfb",
+    "fast_open":true
+}