fix: default CLIENT to reth in .env and docker-compose.yml (#1035)

* fix: default CLIENT to reth in .env

The default .env ships CLIENT=geth, which combined with
USE_BASE_CONSENSUS=true crash-loops on a clean checkout. This
contradicts the README (reth is documented as default) and the Azul
migration guide (geth + base-consensus is unsupported).

Change the CLIENT fallback from geth to reth so that a clean checkout
works out of the box.

Fixes #1010

* fix: update default client from geth to reth in docker-compose.yml

---------

Co-authored-by: Serhat Dolmac <srhtsrht17@gmail.com>

Author: mw2000

.env

@@ -1,3 +1,3 @@
-CLIENT=${CLIENT:-geth}
+CLIENT=${CLIENT:-reth}
 HOST_DATA_DIR=./${CLIENT}-data
 USE_BASE_CONSENSUS=true

docker-compose.yml

@@ -2,7 +2,7 @@ services:
   execution:
     build:
       context: .
-      dockerfile: ${CLIENT:-geth}/Dockerfile
+      dockerfile: ${CLIENT:-reth}/Dockerfile
     restart: unless-stopped
     ports:
       - "8545:8545" # RPC
@@ -20,7 +20,7 @@ services:
   node:
     build:
       context: .
-      dockerfile: ${CLIENT:-geth}/Dockerfile
+      dockerfile: ${CLIENT:-reth}/Dockerfile
     restart: unless-stopped
     depends_on:
       - execution