Support network_mode=host for local testing #5318
Description
Describe the feature you'd like
Sagemaker local uses docker compose internal network to make containers communicate with each other.
For some tools, such as Snowflake, some companies may require login via SSO when testing locally.
However the login redirect (bringing back the access token) cannot be managed by the sagemaker container since it is not listening to the same localhost (docker internal network) as the user's browser (actual localhost).
How would this feature be used? Please describe.
Allow setting network_mode="host" in container configuration, so that browser redirects can be handled succesfully. This also helps with other random VPN issues not manging correctly docker traffic.
When set, the network_mode parameter should be propagated to each container and ports must be discarded (as network_mode="host" overrides ports, allowing traffic on any port).
Describe alternatives you've considered
None worked, no documentation about containers networking can be found in the official docs.