Hi,
I'm trying to pull up keycloak via docker by connecting to a SqlServer db.
If I try to connect to a normal db everything works normally, if I try to connect to the same server but to named instance with dynamic port the connection fails.

The question is:
is it possible to connect to a named instance named istance with dynamic port? Do you need to specify any special parameters?

Here are some examples:

services:
  auth:
    image: jboss/keycloak
    environment:
      DB_VENDOR: mssql
      DB_ADDR: {server_name}
      DB_DATABASE: {db_name}
      DB_USER: {db_user}
      DB_PASSWORD: {db_password}
      ...

IT WORKS!

services:
  auth:
    image: jboss/keycloak
    environment:
      DB_VENDOR: mssql
      DB_ADDR: {server_name}\{istance_name}
      DB_DATABASE: {db_name}
      DB_USER: {db_user}
      DB_PASSWORD: {db_password}
      ...

IT NOT WORKS!

Thanks