try to fix sql health check

Author: jogibear9988

.github/workflows/dotnetpull.yml

@@ -18,7 +18,7 @@ jobs:
           SA_PASSWORD: YourStrong@Passw0rd
           ACCEPT_EULA: Y
         options: >-
-          --health-cmd " /opt/mssql-tools/bin/sqlcmd -S localhost -U sa -P 'YourStrong@Passw0rd' -Q 'SELECT 1'"
+          --health-cmd "bash -c '</dev/tcp/localhost/1433' && exit 0 || exit 1"
           --health-interval=10s
           --health-timeout=5s
           --health-retries=10