bitcoin.conf already has server=1, rpcbind=0.0.0.0, rpcallowip, listen.
Passing them again via command-line causes bitcoin to try binding port
8332 twice → "Address already in use" → container crashes on every start.
Now only passes pruning/txindex args and dbcache via CLI.
Health check uses cookie auth (-datadir) instead of plaintext password.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>