title: Invalid URL error is raised when running azure iotc.connect() from within a Python:3.7 base image docker container
body: <p>My script runs correctly and can connect to IOT central when ran on the host RaspberryPi, Python3.7 and also from my Windows10 laptop. However, it raises an InvalidURL(f"URL can't contain control characters. {url!r} error when ran in a container built with the python:3.7-buster.  </p>
  
  <p>I have tried various Python Docker images but got the same error.</p>
  
  <pre><code>import iotc
  from iotc import IOTConnectType, IOTLogLevel
  from random import randint
  import settings, client
  import json, time
  
  # settings_fp = r"config.json"
  settings_fp = '/var/lib/project/config.json'
  
  
  with open(settings_fp, 'r') as settings_file:
    settings = json.load(settings_file)
  
  scopeId = settings['cloud']['scope_id']
  deviceId = settings['cloud']['device_id']
  deviceKey = settings['cloud']['primary_key']
  
  iotc = iotc.Device(scopeId, deviceKey, deviceId, IOTConnectType.IOTC_CONNECT_SYMM_KEY)
  iotc.setLogLevel(IOTLogLevel.IOTC_LOGGING_API_ONLY)
  
  gCanSend = False
  gCounter = 0
  
  def onconnect(info):
    global gCanSend
    print("- [onconnect] =&gt; status:" + str(info.getStatusCode()))
    if info.getStatusCode() == 0:
       if iotc.isConnected():
         gCanSend = True
         print("Connected to the cloud!!!")
  
  def onmessagesent(info):
    print("\t- [onmessagesent] =&gt; " + str(info.getPayload()))
  
  def oncommand(info):
    print("- [oncommand] =&gt; " + info.getTag() + " =&gt; " + str(info.getPayload()))
  
  def onsettingsupdated(info):
    print("- [onsettingsupdated] =&gt; " + info.getTag() + " =&gt; " + info.getPayload())
  
  iotc.on("ConnectionStatus", onconnect)
  iotc.on("MessageSent", onmessagesent)
  iotc.on("Command", oncommand)
  iotc.on("SettingsUpdated", onsettingsupdated)
  
  iotc.connect() # code fails here
  </code></pre>
  
  <p>I expect a normal connection to IOT central but instead get</p>
  
  <blockquote>
    <p>InvalidURL(f"URL can't contain control characters. {url!r} "</p>
  </blockquote>