title: How get teamcity env params in dockerfile?
body: <p>I have several build steps in teamcity which build and push docker image. How can I get env params from teamcity in <code>dockerfile</code>. Now <code>dockerfile</code> looks like:</p>
  <pre><code>FROM python:3.8.9-slim-buster
  ENV test24=2626
  WORKDIR /usr/src/app
  COPY requirements.txt ./
  RUN pip install --no-cache-dir -r requirements.txt
  
  COPY . .
  
  EXPOSE 8000
  CMD [ &quot;sh&quot;, &quot;./app.sh&quot; ]
  </code></pre>