[Feature Request]: Set use_docker to True if unspecified

[sonichi]

Is your feature request related to a problem? Please describe.

Currently we output a warning if use_docker is not specified and docker is not installed. It will be more secure if we set the default value to True.

Describe the solution you'd like

[ ] Change the default value in execute_code to True
[ ] Make sure instructions for using docker is complete and visible (e.g., via a link) in every example (README, docs, notebooks)
[ ] Add a comment that to disable docker use_docker must be explicitly set to False in every example code snippet involving code execution
[ ] Check the sample app to make sure it works after these changes.

Additional context

No response

[r3d91ll]

@sonichi thank you for the invite on Discord. I didn't know this was an open issue. I'm wrote up a more polished version of the tutorial on my LinkedIn. You can also find it on my GitHub. Over the weekend I'll work on reformatting it for a pull request to add to the AutoGen documentation. This tutorial is designed to simplify LLM development and make it more accessible.

If you have the bandwidth give it a once over and let me know if there is anything you want added or explained in more detail