Modified pipelines to connect using sqlcmd inside of the container instead (#995)

Author: yitam

azure-pipelines.yml

@@ -101,7 +101,8 @@ jobs:
       docker pull mcr.microsoft.com/mssql/server:2017-latest
       docker run -e 'ACCEPT_EULA=Y' -e 'SA_PASSWORD=$(pwd)' -p 1433:1433 -h $(host) --name=$(host) -d mcr.microsoft.com/mssql/server:2017-latest
       docker ps -a
-      sqlcmd -S $(server) -U $(uid) -P $(pwd) -Q 'select @@Version'
+      sleep 5
+      docker exec -t $(host) /opt/mssql-tools/bin/sqlcmd -S $(server) -U $(uid) -P $(pwd) -Q 'select @@Version'
     displayName: 'Run SQL Server for Linux'
 
   - script: |