Fix Docker setup: Enable database table creation on first run

[tux234]

Problem

The Docker setup fails to start because the database migration setting prevents table creation. The application crashes with "relation does not exist" errors when trying to access tables that were never created.

Root Cause

The sails_models__migrate: safe setting in docker-compose.yml prevents Sails.js from creating database tables, but the README documentation states that the database will be "initialized" on first run.

Solution

Change the migration setting from safe to alter to allow automatic table creation during development setup.

Testing

• Verified that docker-compose up --build now works without errors
• Tables are created automatically on first run as documented
• Application starts successfully and is accessible at localhost:1337

Let me know if you have questions, or if I'm misunderstanding the intention of the current configuration. Thanks!

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[eashaw]

@tux234 Sorry for the delay in reviewing this. IIRC, the database tables are created by the entrypoint.sh script when the container starts for the first time.

If the server is configured to always start with the alter migration strategy, it will try to rebuild the database every time the server starts, which can fail and lead to data loss if there are a large number of records.

[tux234]

@eashaw

Got it! So when I attempted to run it locally, it kept failing until I changed that value. Then the container spun up without issue. I fully admit my knowledge of containerization has some gaps, so if this is best practice, no worries!

I can try to reproduce the error on another machine to see if we need to tweak something else.

Thanks for the insight!

[tux234]

Ok. Tried to reproduce the error on another machine and it didn't happen. Must have been a fluke on my end. Thanks for the help and I'll close this PR.