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bitdeals bf2c2d3508 feat: docker image for Bitcoin Core, configured by environment
Replaces lncm/bitcoind, which pins Core 26 — a version that still has legacy
wallets, while the code that talks to it (bt's BitcoindClient) is written for
the descriptor-only behaviour of 29 and later.

The binaries are the official release build, verified by SHA-256 in the same
layer that downloads them; a version bump that forgets the checksum fails the
build instead of shipping something unverified. uid 1000 and /data/.bitcoin are
kept from the image this replaces, so an existing named volume survives the
switch without a recursive chown of a synced chain.

Verified on testnet2: regtest node healthy in ~12 s, descriptor wallet, 101
blocks mined, sendtoaddress accepted — the last one being the check for
BITCOIND_FALLBACKFEE, without which a fresh chain refuses to send.
2026-08-06 11:56:52 +00:00

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#!/bin/sh
# Healthy = the RPC answers. Not "the chain is synced": an initial block
# download takes days on mainnet, and a container that reports unhealthy for all
# of it would be restarted by every orchestrator that watches health.
#
# The credentials come from cli.conf, written by run.sh, so they stay out of the
# process list -- unlike the daemon's own arguments, which cannot avoid them.
set -eu
exec gosu bitcoin bitcoin-cli \
-datadir="${BITCOIN_DATA:-/data/.bitcoin}" \
-conf="${BITCOIN_DATA:-/data/.bitcoin}/cli.conf" \
getblockchaininfo > /dev/null