faster mssql startup

Author: lovasoa

tests/mssql/configure-db.sh

@@ -1,7 +1,11 @@
 #!/usr/bin/env bash
 
-# Wait 60 seconds for SQL Server to start up
-sleep 60
+# Wait for SQL Server to be ready for connections
+until /opt/mssql-tools18/bin/sqlcmd -S localhost -U sa -P $SA_PASSWORD -d master -Q "SELECT 1;" -No
+do
+  echo "Waiting for SQL Server to be ready..."
+  sleep 1
+done
 
 # Run the setup script to create the DB and the schema in the DB
 /opt/mssql-tools18/bin/sqlcmd -S localhost -U sa -P $SA_PASSWORD -d master -i setup.sql -No