feat: charon nickname env variable (#311)

Add `CHARON_NICKNAME` to env samples and docker compose env variables.

Author: DiogoSantoss

.env.sample.holesky

@@ -75,6 +75,9 @@ LIGHTHOUSE_CHECKPOINT_SYNC_URL=https://checkpoint-sync.holesky.ethpandaops.io/
 # Advertise a custom external DNS hostname or IP address for libp2p peer discovery.
 #CHARON_P2P_EXTERNAL_HOSTNAME=
 
+# Nickname to identify this charon node on monitoring (max 32 characters)
+#CHARON_NICKNAME=
+
 # Loki log aggregation server addresses. Disable loki log aggregation by setting an empty address.
 #CHARON_LOKI_ADDRESSES=
 

.env.sample.mainnet

@@ -75,6 +75,9 @@ LIGHTHOUSE_CHECKPOINT_SYNC_URL=https://mainnet.checkpoint.sigp.io/
 # Advertise a custom external DNS hostname or IP address for libp2p peer discovery.
 #CHARON_P2P_EXTERNAL_HOSTNAME=
 
+# Nickname to identify this charon node on monitoring (max 32 characters)
+#CHARON_NICKNAME=
+
 # Loki log aggregation server addresses. Disable loki log aggregation by setting an empty address.
 #CHARON_LOKI_ADDRESSES=
 

docker-compose.yml

@@ -93,6 +93,7 @@ services:
       - CHARON_FEATURE_SET_ENABLE=${CHARON_FEATURE_SET_ENABLE:-}
       - CHARON_LOKI_ADDRESSES=${CHARON_LOKI_ADDRESSES:-http://loki:3100/loki/api/v1/push}
       - CHARON_LOKI_SERVICE=charon
+      - CHARON_NICKNAME=${CHARON_NICKNAME:-}
     ports:
       - ${CHARON_PORT_P2P_TCP:-3610}:${CHARON_PORT_P2P_TCP:-3610}/tcp # P2P TCP libp2p
     networks: [dvnode]