ElectrumX is built from this source tree with RocksDB and joins the external 'palladium' network of the node in palladiumcore/docker, reaching it as palladiumd:2332. RPC credentials come from .env (ignored by git, see .env.example). The Bitcoin-specific contrib/Dockerfile is removed. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>