added test for connection from client to server

.travis.yml

@@ -30,7 +30,8 @@ script:
   - docker network ls
   - docker inspect -f "{{ .HostConfig.Links }}" client
   - docker logs client
-  - docker ps -a  
+  - docker ps -a
+  - docker exec client bash -c ./TestSqlcmd.sh  
   - docker exec client python ./test/functional/setup/setup_dbs.py -dbname $SQLSRV_DBNAME
   - docker exec client python ./test/functional/setup/setup_dbs.py -dbname $PDOSQLSRV_DBNAME
   - docker exec client php ./test/functional/pdo_sqlsrv/*.phpt

TestSqlcmd.sh

@@ -0,0 +1,11 @@
+#!bin/bash
+set -e
+
+$test = "sqlcmd  -S sql -U sa -P Password123"
+
+until $test; do
+>&2 echo "SQL Server is starting up. Running initial db configuration"
+sleep 1
+done
+
+echo "SQL Server is up - starting app"