MSSQL SQL Server - TCP 1433

Hi guys, I doing some research and try to create one dev ambient on my house the point is:
Today I have a traefik on raspberry that is working really good on my system! I created another raspberry with docker and on there is where I aim to have:
SQL Server
Jenkins and others

Until know I able to connect via (to any app that I deploy on the second raspberry)

But when I try to connect to my sql server via or even,1433 I get timeout or some network error.

I don't know if this is possible, anyone has any idea?

The idea is more or less on the image below.