Hack to get proxy to work in c-lightning, getting the tor container IP dynamically

cyphernodeconf_docker/prompters/100_lightning.js

@@ -17,7 +17,7 @@ const featureCondition = function(props) {
 
 const templates = {
   'lnd': [ path.join('lnd','lnd.conf') ],
-  'c-lightning': [ path.join('c-lightning','config') ]
+  'c-lightning': [ path.join('c-lightning','config'), path.join('c-lightning','entrypoint.sh') ]
 };
 
 module.exports = {

cyphernodeconf_docker/templates/installer/docker/docker-compose.yaml

@@ -29,7 +29,7 @@ services:
 
   lightning:
     image: cyphernode/clightning:<%= lightning_version %>
-    command: $USER sh -c 'while [ ! -f "/bitcoin_monitor/up" ]; do echo "bitcoin not ready" ; sleep 10 ; done ; echo "bitcoin ready!" ; lightningd'
+    command: $USER /.lightning/entrypoint.sh
     <% if( lightning_expose ) { %>
     ports:
       - "9735:9735"

cyphernodeconf_docker/templates/lightning/c-lightning/config

@@ -18,12 +18,12 @@ addr=0.0.0.0:9735
 
 <% if ( torifyables.indexOf('tor_lnnode') !== -1 ) { %>
 # TOR
-proxy=tor:9050
+# proxy=tor:9050 this has to be made at execution time because of getaddrinfo and alpine not being friends, see entrypoint.sh
 <% if ( clearnet.indexOf('clearnet_lnnode') == -1 ) { %>
 # TOR only, no clearnet
 always-use-proxy=true
+disable-dns
 <% } %>
-#disable-dns
 <% if (lightning_announce) { %>
 # Announcing TOR address
 announce-addr=<%= locals.tor_hostname %>:9735

cyphernodeconf_docker/templates/lightning/c-lightning/entrypoint.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+while [ ! -f "/bitcoin_monitor/up" ]; do echo "bitcoin not ready" ; sleep 10 ; done
+
+<% if ( torifyables.indexOf('tor_lnnode') !== -1 ) { %>
+while [ -z "${TORIP}" ]; do echo "tor not ready" ; TORIP=$(getent hosts tor | awk '{ print $1 }') ; sleep 10 ; done
+
+echo "TOR ready at IP ${TORIP}"
+
+lightningd --proxy=$TORIP:9050
+<% } else { %>
+
+lightningd
+
+<% } %>

dist/setup.sh

@@ -477,6 +477,7 @@ install_docker() {
         fi
 
         copy_file $cyphernodeconf_filepath/lightning/c-lightning/config $LIGHTNING_DATAPATH/config 1 $SUDO_REQUIRED
+        copy_file $cyphernodeconf_filepath/lightning/c-lightning/entrypoint.sh $LIGHTNING_DATAPATH/entrypoint.sh 1 $SUDO_REQUIRED
 
     fi
   fi