Allow for running initialization scripts

[shanegenschaw]

Applies to mssql-server-linux, issue #11, adding functionality to mount initialization scripts and execute them when the container is started.

When a container is started for the first time, it will execute any files with extensions .sh or .sql that are found in /docker-entrypoint-initdb.d. Files will be executed in alphabetical order. You can easily populate your SQL Server services by mounting scripts into that directory and provide custom images with contributed data.

[shanegenschaw]

Looks like this may also help resolve issue #2 and #49

[twright-msft]

@shanegenschaw - Thanks for submitting this PR. Our plan is to add this functionality to a hopefully near future release of SQL Server. The current thinking is that we would have the sqlservr process execute these SQL scripts on startup as opposed to a .sh with sqlcmd. That way we can have a universal solution for SQL on Linux and on Windows. The sqlservr process could look for an env variable which contained either a directory path to a set of files or a json formatted list of full paths to files. What do you think about that approach?

[shanegenschaw]

@twright-msft - your approach sounds fantastic. Good idea to have a universal & consistent solution across platforms. Thanks for your consideration!

[twright-msft]

OK cool. We'll get 'er done then. We'll close out this PR since it will be implemented in a different but conceptually similar way. Thanks for contributing and keep the suggestions/PRs coming!

[kspearrin]

@twright-msft Was this ever done? Not able to find any docs about it. For now I'm trying to run an entrypoint.sh but that doesn't work since you have to call /opt/mssql/bin/sqlservr first to start up sql server and that never returns. ex:

Dockerfile

FROM microsoft/mssql-server-linux

COPY setup.sql /

COPY entrypoint.sh /
RUN chmod +x /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]

entrypoint.sh

#!/bin/sh

/opt/mssql/bin/sqlservr
# the above never returns so the script below doesn't get run... :(
/opt/mssql-tools/bin/sqlcmd -S localhost -U sa -P ${SA_PASSWORD} -i /setup.sql

[twright-msft]

Take a look at this example:
https://github.com/twright-msft/mssql-node-docker-demo-app

[manish-panwar]

Any luck on having a better solution?

[potatoqualitee]

Our plan is to add this functionality to a hopefully near future release of SQL Server.

Any chance this can be in 2022? 😊

[tracker1]

Something to look at...

https://github.com/tracker1/mssql-docker-enhanced

[potatoqualitee]

Thank you but I am looking for official Microsoft support

[jrichardsz]

2023 and nothing.

The official demo https://github.com/mcmoe/mssqldocker is a fat container, which is not a good idea.

Mysql, MariaDb, Postgress, even Oracle has the classic

    volumes:
     - ./my/database:/docker-entrypoint-initdb.d 

@shanegenschaw your approach was good. No body uses windows for docker :(

[srstsavage]

+1, it's been six years, let's be realistic and not let the perfect be the enemy of the good. Can this please get re-opened and merged?