Fixed hashed msg by openssl in auth.sh, the JS client and the docs

proxy_docker/README.md

@@ -26,6 +26,16 @@ DERIVATION_PATH=0/n
 WATCHER_BTC_NODE_PRUNED=false
 ```
 
+## Choose the right architecture
+
+...by modifying the following line in Dockerfile:
+
+```shell
+COPY app/bin/lightning-cli_x86 ${HOME}/lightning-cli
+```
+
+...to lightning-cli_arm if running on a RPi.
+
 ## Building docker image
 
 ```shell