remove mssql-tools from Dockerfile. Latest version of SQL Server on Linux have it already on board.

samples/development-frameworks/SqlServerOnDocker/docker/db/Dockerfile

@@ -7,9 +7,6 @@ RUN apt-get update && apt-get install -y  \
 # https://docs.microsoft.com/en-us/sql/connect/odbc/linux/installing-the-microsoft-odbc-driver-for-sql-server-on-linux
 RUN curl https://packages.microsoft.com/keys/microsoft.asc | apt-key add -
 RUN curl https://packages.microsoft.com/config/ubuntu/16.04/prod.list > /etc/apt/sources.list.d/mssql-release.list
-#RUN apt-get update
-#RUN ACCEPT_EULA=Y apt-get install -y \
-#    mssql-tools
 
 RUN apt-get install -y locales \
     && echo "en_US.UTF-8 UTF-8" > /etc/locale.gen \

samples/development-frameworks/SqlServerOnDocker/docker/web/Dockerfile

@@ -10,7 +10,6 @@ RUN curl https://packages.microsoft.com/config/ubuntu/16.04/prod.list > /etc/apt
 RUN apt-get update
 RUN ACCEPT_EULA=Y apt-get install -y \
     msodbcsql \
-#    mssql-tools \
     unixodbc-dev
 
 #python part of the game