Ethereum Sepolia Testnet PoS (Merge) Execution and Consensus Client setting with docker compose. Uses go-ethereum (geth) as the execution client and Lodestar as the consensus client.

nodes-sepolia.yaml

version: "3.8"

services:
  execution:
    image: ethereum/client-go:v1.10.20
    container_name: geth-sepolia
    # --http.addr and --authrpc.addr 0.0.0.0 to listen on all interfaces and not just localhost. Localhost wouldn't work with containers as they have differt ip's.
    # add container name "geth-sepolia" to accepted --http.vhosts and --authrpc.vhosts
    # geth v1.10.20 already has terminaltotaldifficulty (TTD) built-in but leaving for networks that need explicit stating.
    # geth will open the authrpc and create a jwt if it detects merge i.e. TTD
    command: |
      --syncmode full --snapshot=false --sepolia --http --http.api engine,personal,eth,net,web3
      --http.addr 0.0.0.0 --http.corsdomain '*' --http.vhosts "localhost,geth-sepolia"
      --override.terminaltotaldifficulty 17000000000000000 --authrpc.vhosts "localhost,geth-sepolia"
      --authrpc.jwtsecret /root/.ethereum/sepolia/geth/jwtsecret --authrpc.addr 0.0.0.0
    ports: # Set the port you want to access the execution client RPC on your host. Here 8546
      - "8546:8545"
    volumes: # You might have to mkdir ~/.ethereum
      - type: bind
        source: ~/.ethereum
        target: /root/.ethereum
    networks:
      - geth
    stop_grace_period: 3m # long grace period to avoid unclean shutdown
    restart: always

  consensus:
    image: chainsafe/lodestar:v0.38.1
    container_name: lodestar-sepolia
    # Shares the same root folder with geth. Can easily share the jwtsecret
    # execution.urls i.e. engine API, authrpc... The connection to the execution client
    # eth1.providerUrls for the execution JSON-RPC
    command: |
      beacon --network sepolia --rootDir /root/.ethereum --terminal-total-difficulty-override "17000000000000000"
      --execution.urls http://geth-sepolia:8551 --eth1.providerUrls http://geth-sepolia:8545 --jwt-secret /root/.ethereum/sepolia/geth/jwtsecret
    ports:
      - "9596:9596"
    volumes:
      - type: bind
        source: ~/.ethereum
        target: /root/.ethereum
    networks:
      - geth
    stop_grace_period: 3m
    restart: always

networks:
  geth:

volumes:
  sepolia: