copy code from PR and update README

docker-scripts.sh

@@ -0,0 +1,142 @@
+#!/bin/sh
+export COMPOSE_PROJECT_NAME=lnbits-legend
+
+bitcoin-cli-sim(){
+  docker exec lnbits-legend-bitcoind-1 bitcoin-cli -rpcuser=lnbits -rpcpassword=lnbits -regtest $@
+}
+
+# args(i, cmd)
+lightning-cli-sim() {
+  i=$1
+  shift # shift first argument so we can use $@
+  docker exec lnbits-legend-clightning-$i-1 lightning-cli --network regtest $@
+}
+
+# args(i, cmd)
+lncli-sim() {
+  i=$1
+  shift # shift first argument so we can use $@
+  docker exec lnbits-legend-lnd-$i-1 lncli --network regtest --rpcserver=lnd-$i:10009 $@
+}
+
+# args(i)
+fund_clightning_node() {
+  address=$(lightning-cli-sim $1 newaddr | jq -r .bech32)
+  echo "funding: $address on clightning-node: $1"
+  bitcoin-cli-sim -named sendtoaddress address=$address amount=10 fee_rate=100 > /dev/null
+}
+
+# args(i)
+fund_lnd_node() {
+  address=$(lncli-sim $1 newaddress p2wkh | jq -r .address)
+  echo "funding: $address on lnd-node: $1"
+  bitcoin-cli-sim -named sendtoaddress address=$address amount=10 fee_rate=100 > /dev/null
+}
+
+# args(i, j)
+connect_clightning_node() {
+  pubkey=$(lightning-cli-sim $2 getinfo | jq -r '.id')
+  lightning-cli-sim $1 connect $pubkey@lnbits-legend-clightning-$2-1
+}
+
+lnbits-regtest-start(){
+  lnbits-regtest-stop
+  docker compose up -d --remove-orphans
+}
+
+lnbits-regtest-start-log(){
+  lnbits-regtest-stop
+  docker compose up --remove-orphans
+}
+
+lnbits-regtest-stop(){
+  docker compose down --volumes
+  # clean up lightning node data
+  sudo rm -rf ./data/clightning-1 ./data/clightning-2 ./data/clightning-3 ./data/lnd-1 ./data/lnd-2 ./data/boltz/boltz.db
+  # recreate lightning node data folders preventing permission errors
+  mkdir ./data/clightning-1 ./data/clightning-2 ./data/clightning-3 ./data/lnd-1 ./data/lnd-2
+}
+
+lnbits-regtest-restart(){
+  lnbits-regtest-stop
+  lnbits-regtest-start
+}
+
+lnbits-regtest-init(){
+  echo "init_bitcoin_wallet..."
+  bitcoin-cli-sim createwallet lnbits || bitcoin-cli-sim loadwallet lnbits echo "mining 150 blocks..."
+  bitcoin-cli-sim -generate 150 > /dev/null
+
+  # create 10 UTXOs for each node
+  for i in 0 1 2 3 4 5 6 7 8 9; do
+    fund_clightning_node 1
+    fund_clightning_node 2
+    fund_clightning_node 3
+    fund_lnd_node 1
+    fund_lnd_node 2
+  done
+
+  echo "mining 5 blocks... and waiting for the nodes to catch up"
+  bitcoin-cli-sim -generate 5 > /dev/null
+  wait-for-lnd-sync 1
+  wait-for-lnd-sync 2
+
+  channel_size=16000000 # 0.016 btc
+  balance_size_msat=7000000000 # 0.07 btc
+
+  # open channels 1 -> 2, 2 -> 3, 3 -> 1
+  connect_clightning_node 1 3
+  lightning-cli-sim 1 fundchannel -k id=$(connect_clightning_node 1 2 | jq -r '.id') amount=$channel_size push_msat=$balance_size_msat
+  connect_clightning_node 2 1
+  lightning-cli-sim 2 fundchannel -k id=$(connect_clightning_node 2 3 | jq -r '.id') amount=$channel_size push_msat=$balance_size_msat
+  connect_clightning_node 3 2
+  lightning-cli-sim 3 fundchannel -k id=$(connect_clightning_node 3 1 | jq -r '.id') amount=$channel_size push_msat=$balance_size_msat
+
+  # lnd node for boltz
+  lncli-sim 1 connect $(lightning-cli-sim 1 getinfo | jq -r '.id')@lnbits-legend-clightning-1-1
+  lncli-sim 1 openchannel $(lncli-sim 1 listpeers | jq -r '.peers[0].pub_key') $channel_size 8000000
+
+  # lnd doesnt like more than 1 pending channel?
+  bitcoin-cli-sim -generate 10 > /dev/null
+  echo "waiting for lnd to catch up..."
+  wait-for-lnd-channel 1
+
+  # fund lnbits lnd channel
+  lncli-sim 1 connect $(lncli-sim 2 getinfo | jq -r '.identity_pubkey')@lnbits-legend-lnd-2-1
+  lncli-sim 1 openchannel $(lncli-sim 1 listpeers | jq -r '.peers[1].pub_key') $channel_size 8000000
+
+  bitcoin-cli-sim -generate 10 > /dev/null
+  echo "waiting for lnd to catch up..."
+  wait-for-lnd-channel 1
+
+
+  # lnd node for lnbits
+  lncli-sim 2 connect $(lightning-cli-sim 1 getinfo | jq -r '.id')@lnbits-legend-clightning-1-1
+  lncli-sim 2 openchannel $(lncli-sim 2 listpeers | jq -r '.peers[0].pub_key') $channel_size 8000000
+
+  echo "waiting for lnd to catch up..."
+  bitcoin-cli-sim -generate 10 > /dev/null
+  wait-for-lnd-channel 2
+
+  # TODO: eclair nodes?
+}
+
+wait-for-lnd-channel(){
+  while true; do
+    pending=$(lncli-sim $1 pendingchannels | jq -r '.pending_open_channels | length')
+    if [[ "$pending" == "0" ]]; then
+      break
+    fi
+    sleep 1
+  done
+}
+
+wait-for-lnd-sync(){
+  while true; do
+    if [[ "$(lncli-sim $1 getinfo 2>&1 | jq -r '.synced_to_chain')" == "true" ]]; then
+      break
+    fi
+    sleep 1
+  done
+  sleep 5
+}