docs: mdbook add snapshot (#477)

* docs: mdbook add snapshot

Author: yiweichi

book/src/docker-operations.md

@@ -42,7 +42,43 @@ Key environment variables:
 
 **Note**: You must provide your own RPC endpoints. Configure these in your `.env` file before starting the stack.
 
-### 3. Start the Stack
+### 3. Download Snapshot (Optional)
+
+For faster initial sync, you can optionally download a snapshot of the blockchain data before starting the stack.
+
+**This step is recommended but not required.** Without a snapshot, the node will sync from genesis, which can take considerably longer.
+
+**Step 1:** Create the volume directory if it doesn't exist:
+
+```bash
+mkdir -p volumes/l2reth
+```
+
+**Step 2:** Download the snapshot for your target network:
+
+For Scroll Mainnet:
+```bash
+wget https://scroll-geth-snapshot.s3.us-west-2.amazonaws.com/reth/latest.tar
+```
+
+For Scroll Sepolia:
+```bash
+wget https://scroll-sepolia-l2geth-snapshots.s3.us-west-2.amazonaws.com/reth/latest.tar
+```
+
+**Step 3:** Extract the snapshot to the volume directory (`volumes/l2reth`):
+
+```bash
+tar -xvf latest.tar -C volumes/l2reth
+```
+
+**Step 4:** Clean up the downloaded archive:
+
+```bash
+rm latest.tar
+```
+
+### 4. Start the Stack
 
 For standard operation (following public networks):
 
@@ -56,7 +92,7 @@ For shadow-fork mode:
 docker compose --profile shadow-fork up -d
 ```
 
-### 4. Access the Services
+### 5. Access the Services
 
 Once running, the following endpoints are available:
 

book/src/running-a-node.md

@@ -37,6 +37,38 @@ For development builds (faster compilation, slower runtime):
 cargo build --bin rollup-node
 ```
 
+## Download Snapshot (Optional)
+
+For faster initial sync, you can optionally download a snapshot of the blockchain data instead of syncing from genesis.
+
+**This step is recommended but not required.** Without a snapshot, the node will sync from genesis, which can take considerably longer.
+
+**Step 1:** Download the snapshot for your target network:
+
+For Scroll Mainnet:
+```bash
+wget https://scroll-geth-snapshot.s3.us-west-2.amazonaws.com/reth/latest.tar
+```
+
+For Scroll Sepolia:
+```bash
+wget https://scroll-sepolia-l2geth-snapshots.s3.us-west-2.amazonaws.com/reth/latest.tar
+```
+
+**Step 2:** Extract the snapshot to your data directory:
+
+```bash
+tar -xvf latest.tar -C <DATADIR_PATH>
+```
+
+Replace `<DATADIR_PATH>` with your node's data directory path. This should match the `--datadir` flag you'll use when running the node (see configuration section below).
+
+**Step 3:** Clean up the downloaded archive:
+
+```bash
+rm latest.tar
+```
+
 ## Running the Node
 
 ### Basic Command