title: what are depended package for install WeasyPrint in dockerfile?
body: <p>I install WeasyPrint and config it for views.py ,urls.py,admin.py and my template.</p>
  <p>when i want convert html page to pdf , i have this error :</p>
  <pre class="lang-none prettyprint-override"><code>(process:7): Pango-CRITICAL **: 13:27:29.635: pango_font_get_hb_font: assertion 'PANGO_IS_FONT (font)' failed
  base_shop_web_1 exited with code 245
  </code></pre>
  <p>my Dockerfile is :</p>
  <pre class="lang-bash prettyprint-override"><code>FROM python:alpine
  
  ENV PYTHONDONTWRITEBYTECODE 1
  
  ENV PYTHONUNBUFFERED 1
  
  RUN mkdir /code
  
  ADD requirements.txt /code/
  
  WORKDIR /code
  
  RUN apk add --update --no-cache curl jq py3-configobj py3-pip py3-setuptools python3 python3-dev 
  
  RUN apk add cairo-dev pango-dev gdk-pixbuf-dev py-lxml shared-mime-info openjpeg-dev freetype-dev \
      libpng-dev gettext libxml2-dev libxslt-dev
  
  RUN apk add make automake libffi-dev gcc linux-headers g++ py3-brotli  musl-dev postgresql-dev zlib-dev jpeg-dev 
  
  RUN pip3 install -r requirements.txt  
  
  EXPOSE 8000
  
  COPY . /code/
  </code></pre>
  <p>what things i shoud to add dockerfile ?</p>