title: /bin/sh: 1: apk: not found, while build image docker
body: <p>I'm trying to create and run a djanog image with the docker to deploy it along with kubernetes, but when I run the image build command, it gives the error &quot;/bin/sh: 1: apk: not found
  &quot;</p>
  <p>Dockerfile:</p>
  <pre><code>FROM python:3.8-slim
  LABEL maintainer=&quot;r.ofc@hotmail.com&quot;
  
  ENV PROJECT_ROOT /app
  WORKDIR $PROJECT_ROOT
  
  RUN apk update \
      &amp;&amp; apk add mariadb-dev \
          gcc\
          python3-dev \
          pango-dev \
          cairo-dev \
          libtool \
          linux-headers \
          musl-dev \
          libffi-dev \
          openssl-dev \
          jpeg-dev \
          zlib-dev
          
  RUN pip install --upgrade pip
  COPY requirements.txt requirements.txt
  RUN pip install -r requirements.txt
  COPY . .
  
  CMD python manage.py runserver 0.0.0.0:8000
  </code></pre>
  <p>can someone help me?</p>