docker构建mrdoc

## docker构建mrdoc,配pip源，加速构建
- what: docker构建mrdoc,配pip源，加速构建
- where: docker、linux
- when: 2022.5.30
- who: jiaorongtao
- why: 记录
- how:

```
FROM python:3.10.2-alpine
MAINTAINER jrt
LABEL why="优化和精简了镜像,增加了uwsgi"
LABEL version="0.7.7"
ENV PYTHONUNBUFFERED=0 \
    TZ=Asia/Shanghai \
    LISTEN_PORT=10086\
    USER=admin
COPY . /app/MrDoc/
WORKDIR /app/MrDoc
RUN /usr/local/bin/python -m pip install --upgrade pip \
    && sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories
RUN  set -x \
    && apk add --no-cache --virtual .build-deps build-base g++ gcc libxslt-dev python2-dev linux-headers wget vim curl \
    && apk add --no-cache pwgen git tzdata zlib-dev freetype-dev jpeg-dev  mariadb-dev postgresql-dev \
    && python -m pip install --upgrade pip \
    && pip --no-cache-dir install -r requirements.txt \
    && pip --no-cache-dir install mysqlclient \
    && chmod +x docker_mrdoc.sh \
    && wget http://projects.unbit.it/downloads/uwsgi-latest.tar.gz \
    && tar -xf uwsgi-latest.tar.gz \
    && rm -rf uwsgi-latest.tar.gz \
    && cd uwsgi-2.0.20 \
    && make \
    && ln -s /app/MrDoc/uwsgi-2.0.20/uwsgi /usr/bin/uwsgi \
    && apk del .build-deps \
    && rm -rf /var/cache/apk/* 
ENTRYPOINT ["./docker_mrdoc.sh"]
```