MySQL first-boot InnoDB init + schema.sql takes ~6 minutes.
Previous config only allowed 130s total (30s start_period + 20x5s),
causing container to be marked unhealthy before MySQL was ready.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Bind mount ./schema.sql created a directory instead of file in Coolify,
causing MySQL batch_readline error. Use Dockerfile.db to COPY schema
directly into the image instead.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>