fix sqlcmd path on healthcheck

util/MsSql/Dockerfile

@@ -22,6 +22,7 @@ RUN /opt/mssql/bin/mssql-conf set telemetry.customerfeedback false
 RUN echo 127.0.0.1 settings-win.data.microsoft.com >> /etc/hosts
 RUN echo 127.0.0.1 vortex.data.microsoft.com >> /etc/hosts
 
-HEALTHCHECK --timeout=3s CMD sqlcmd -S localhost -U sa -P ${SA_PASSWORD} -Q "SELECT 1" || exit 1
+HEALTHCHECK --timeout=3s CMD /opt/mssql-tools/bin/sqlcmd \
+    -S localhost -U sa -P ${SA_PASSWORD} -Q "SELECT 1" || exit 1
 
 ENTRYPOINT ["/entrypoint.sh"]