title: Error with requirements file when creating docker image
body: <p>Note, I'm brand new to docker.</p>
  <p>I'm trying to create a docker image of my flask app but when I run <code>sudo docker image build -t flask_docker .</code> it keeps throwing version errors at the step of installing the requirements.txt file.</p>
  <p>Here is my docker file</p>
  <pre><code>FROM python:3.8-alpine
  
  COPY requirements.txt /app/requirements.txt
  
  WORKDIR /app
  
  RUN pip3 install -r requirements.txt 
  
  COPY . /app
  
  ENTRYPOINT [&quot;python3&quot;]
  
  CMD [&quot;app.py&quot;]
  </code></pre>
  <p>And here is the error.</p>
  <pre><code>ERROR: Could not find a version that satisfies the requirement Brlapi==0.8.2 (from versions: none)
  ERROR: No matching distribution found for Brlapi==0.8.2
  WARNING: You are using pip version 22.0.4; however, version 22.2.2 is available.
  You should consider upgrading via the '/usr/local/bin/python -m pip install --upgrade pip' command.
  </code></pre>
  <p>What is the proper way to fix this error? Should I just manually go through and find which packages don't install properly and just remove them?</p>