Update version to v1.8.1-rc1

Author: obol-platform

.env.sample

@@ -34,7 +34,7 @@
 
 ######### Charon Config #########
 
-# Charon docker container image version, e.g. `v1.8.0`.
+# Charon docker container image version, e.g. `v1.8.1-rc1`.
 # See available tags https://hub.docker.com/r/obolnetwork/charon/tags.
 #CHARON_VERSION=
 

docker-compose.yml

@@ -1,7 +1,7 @@
 x-node-base:
   # Pegged charon version (update this for each release).
   &node-base
-  image: obolnetwork/charon:${CHARON_VERSION:-v1.8.0}
+  image: obolnetwork/charon:${CHARON_VERSION:-v1.8.1-rc1}
   restart: unless-stopped
   networks: [cluster]
   depends_on: [relay]