Update dockerfile add new version from mssql

mssql/Dockerfile

@@ -1,17 +1,6 @@
-FROM microsoft/mssql-server-linux
-
-LABEL maintainer="Mahmoud Zalt <mahmoud@zalt.me>"
-
-# Create config directory
-# an set it as WORKDIR
-RUN mkdir -p /usr/src/app
-WORKDIR /usr/src/app
-
-# Bundle app source
-COPY . /usr/src/app
-
-RUN chmod +x /usr/src/app/create_table.sh
+FROM mcr.microsoft.com/mssql/server:2017-latest-ubuntu
 
+ENV MSSQL_PID=Express
 ENV MSSQL_DATABASE=$MSSQL_DATABASE
 ENV ACCEPT_EULA=Y
 ENV SA_PASSWORD=$MSSQL_PASSWORD
@@ -19,5 +8,3 @@ ENV SA_PASSWORD=$MSSQL_PASSWORD
 VOLUME /var/opt/mssql
 
 EXPOSE 1433
-
-CMD /bin/bash ./entrypoint.sh