devenv: Upgrade MSSQL Docker image (#28749)

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

devenv/docker/blocks/mssql/build/Dockerfile

-FROM mcr.microsoft.com/mssql/server:2017-CU4-ubuntu
+FROM mcr.microsoft.com/mssql/server:2019-CU8-ubuntu-18.04
 WORKDIR /usr/setup
-COPY . /usr/setup
-RUN chmod +x /usr/setup/setup.sh
+COPY setup.sh setup.sql.template entrypoint.sh ./
+
+USER root
+
+RUN chmod +x setup.sh
+RUN chown -R mssql ./
+
+USER mssql
+
 CMD /bin/bash ./entrypoint.sh

devenv/docker/blocks/mssql/build/setup.sh

 #/bin/bash
+set -eo pipefail
 
 #wait for the SQL Server to come up
 sleep 15s