fix: default to proofs subdir for historical proofs storage

Author: meyer9

reth/reth-entrypoint

@@ -3,6 +3,7 @@ set -eu
 
 IPC_PATH="/data/reth.ipc"
 RETH_DATA_DIR=/data
+RETH_HISTORICAL_PROOFS_STORAGE_PATH="$RETH_DATA_DIR/proofs"
 RPC_PORT="${RPC_PORT:-8545}"
 WS_PORT="${WS_PORT:-8546}"
 AUTHRPC_PORT="${AUTHRPC_PORT:-8551}"
@@ -12,7 +13,6 @@ P2P_PORT="${P2P_PORT:-30303}"
 ADDITIONAL_ARGS=""
 BINARY="./base-reth-node"
 RETH_HISTORICAL_PROOFS="${RETH_HISTORICAL_PROOFS:-false}"
-RETH_HISTORICAL_PROOFS_STORAGE_PATH="${RETH_HISTORICAL_PROOFS_STORAGE_PATH:-}"
 LOG_LEVEL="${LOG_LEVEL:-info}"
 
 if [[ -z "${RETH_CHAIN:-}" ]]; then