Deploying a Base Sepolia Node with Docker

We're using QuickNode for Base Sepolia. This post is how to setup our own node. 1. Prerequisites Docker & Docker Compose installed. L1 RPC Endpoint: A synced Ethereum Sepolia node (e.g., Geth + Lighthouse). L1 Beacon Endpoint: Required for post-Canyon/Ecotone consensus. Hardware: Minimum 16GB RAM and 1.5TB+ NVMe SSD. 2. The Automated Setup Script We use a wrapper script to handle directory creation, JWT generation, and repository patching. This ensures your local paths are correctly mapped into the Docker containers. Save as setup-base-sepolia.sh: #!/usr/bin/env bash set -e echo "🚀 Initializing Base Sepolia Setup..." BASE_DIR="/node-data/testnet/base-sepolia" REPO_DIR="/opt/base-node" # 1. Create directory layout echo "📁 Creating data directories..." mkdir -p ${BASE_DIR}/{op-geth,op-node,shared} # 2. Generate the JWT Secret (The "Handshake" Key) if [ ! -f "${BASE_DIR}/shared/jwt.txt" ]; then echo "🔑 Generating 32-byte hex JWT..." # CRITICAL: No 0x prefix, no newlines. openssl ra