fix(circuit relay): Auto-discover IP4 addr when CR enabled

production/docker/start-production.sh

@@ -4,6 +4,7 @@
 
 # This mnemonic is used to set up persistent public key for e2ee
 # Replace this with your own 12-word mnemonic.
+# You can get one at https://wallet.fullstack.cash.
 export MNEMONIC="olive two muscle bottom coral ancient wait legend bronze useful process session"
 
 # The human readable name this IPFS node identifies as.
@@ -11,6 +12,9 @@ export COORD_NAME=ipfs-service-provider-generic
 
 # Allow this node to function as a circuit relay. It must not be behind a firewall.
 #export ENABLE_CIRCUIT_RELAY=true
+# For browsers to use your circuit realy, you must set up a domain, SSL certificate,
+# and you must forward that subdomain to the IPFS_WS_PORT.
+#export CR_DOMAIN=subdomain.yourdomain.com
 
 # Debug level. 0 = minimal info. 2 = max info.
 export DEBUG_LEVEL=1