Adding README note for Virtual Environment

Author: paulyuk

.devcontainer/first-run-notice.txt

@@ -2,3 +2,5 @@
 It includes everything needed to run through our tutorials and quickstart applications.
 
 📚 Functions docs can be found at: https://learn.microsoft.com/en-us/azure/azure-functions/
+
+>**Note** it is a best practice to create Virtual Environments before doing the `pip install` to avoid dependency issues/collisions, or if you are running in CodeSpaces.  See [Python Environments in VS Code](https://code.visualstudio.com/docs/python/environments#_creating-environments) for more information.

README.md

@@ -62,6 +62,8 @@ An Azure Storage Emulator is needed for this particular sample because we will s
    pip install -r requirements.txt
    ```
 
+>**Note** it is a best practice to create a Virtual Environment before doing the `pip install` to avoid dependency issues/collisions, or if you are running in CodeSpaces.  See [Python Environments in VS Code](https://code.visualstudio.com/docs/python/environments#_creating-environments) for more information.
+
 1. Start the Functions host locally:
 
    ```shell