add testnet4 node docker compose

taptrade-cli-demo/bitcoin-testnet4-node/bitcoin_data/bitcoin.conf

@@ -0,0 +1,15 @@
+[testnet4]
+server=1
+txindex=1
+rpcbind=127.0.0.1
+rpcallowip=127.0.0.1
+rpcport=18332
+# Authentication
+rpcauth=
+# generator: https://jlopp.github.io/bitcoin-core-rpc-auth-generator/
+# Cookie file authentication
+rpccookiefile=/home/user/.bitcoin/.cookie
+# Increase the number of connections
+maxconnections=15
+# Set the maximum number of transactions to keep in the memory pool
+maxmempool=300

taptrade-cli-demo/bitcoin-testnet4-node/docker-compose.yml

@@ -0,0 +1,12 @@
+services:
+  bitcoind:
+    image: mocacinno/btc_testnet4:latest
+    privileged: true
+    container_name: bitcoind
+    volumes:
+      - ./bitcoin_data:/root/.bitcoin/
+    command: ["bitcoind", "-testnet4"]
+    ports:
+      - "18332:18332"
+      - "8333:8333"
+      - "48332:48332"