title: pipenv installing package is occuring `ModuleNotFoundError` without pip install
body: <p>pipenv installing package have some problem to me.</p>
  <p>becaouse of ModuleNotFoundError, I must to execute pip install command</p>
  <p>like <code>pip install python-dotenv</code>.</p>
  <p>Do pip is needed even though using pipenv?</p>
  <p>ModuleNotFoundError is occuring everytime.</p>
  <ul>
  <li>environment: VSCODE remote-container(default simple setting)</li>
  <li>python 3.x</li>
  </ul>
  <p>pipfile</p>
  <pre><code>python-dotenv = &quot;==0.17.1&quot;
  </code></pre>
  <p>run command</p>
  <pre><code>pipenv install packages
  pipenv shell (&lt;-- I am not sure this is needed in my case.)
  python myprogram.py
  </code></pre>
  <p>the error</p>
  <pre><code>Traceback (most recent call last):
    File &quot;my_program.py&quot;, line 11, in &lt;module&gt;
      import script.common.settings as settings
    File &quot;/workspaces/my_project/script/common/settings.py&quot;, line 3, in &lt;module&gt;
      from dotenv import load_dotenv
  ModuleNotFoundError: No module named 'dotenv'
  </code></pre>
  <p>Is there any idea of this ? thank you very much.</p>