The Docker container failed to start because the Alembic migrations
directory was not being copied into the image. The init_db() function
calls _run_alembic_upgrade() which requires /app/migrations to exist.
Added COPY instructions for ./migrations and ./alembic.ini to both
Dockerfile and Dockerfile.local.
Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
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