title: Airflow - BashOperator - error running 2 CLI commands
body: <p>I'm using Ubuntu 20.04 and Airflow 2.0.1.</p>
  <p>I have BashOperator task in DAG which looks like this:</p>
  <pre><code>proxy_update_getProxies = BashOperator(
      task_id='proxy_update_getProxies',
      bash_command=&quot;scripts/proxies-update-get.sh&quot;,
      dag=dag)
  </code></pre>
  <p><code>scripts</code> folder is in <code>dag</code> folder so according to documentation it should be ok to run it like this.</p>
  <p><code>proxies-update-get.sh</code> script contains 2 lines:</p>
  <pre><code>proxy-lists updateGeoIpData --license-key Y00qKC2A9ZoWVXJW
  proxy-lists getProxies --protocols=&quot;https&quot; --output-format=&quot;txt&quot; --output-file=&quot;httpsproxies.txt&quot;
  </code></pre>
  <p><code>proxy-lists</code> is <code>nmp</code> package which can be run with these 2 commands from CLI to update and get list of proxies.
  Script works fine from any folder so <code>$PATH</code> should not be problem yet I get this error:</p>
  <pre><code>can't open file 'proxy-lists': [Errno 2] No such file or directory
  </code></pre>
  <p>What am I doing wrong?</p>