fix: allow rollkit restarts without tearing down volumes

Author: damiannolan

docker-compose.yml

@@ -60,7 +60,10 @@ services:
   rollkit-evm-single:
     image: ghcr.io/rollkit/rollkit-evm-single:v0.1.3
     container_name: rollkit-evm-single
-    entrypoint: /usr/bin/entrypoint.sh
+    volumes:
+      - ./testnet/rollkit-evm-single/init.sh:/scripts/init.sh:ro
+      - rollkit:/root/.evm-single
+    entrypoint: /scripts/init.sh
     environment:
       - EVM_ENGINE_URL=http://reth:8551
       - EVM_ETH_URL=http://reth:8545
@@ -110,10 +113,12 @@ services:
     networks:
       - celestia-zkevm-net
 
+
 volumes:
   celestia-app:
   celestia-bridge:
   reth:
+  rollkit:
 
 networks:
   celestia-zkevm-net:

testnet/rollkit-evm-single/init.sh

@@ -0,0 +1,48 @@
+#!/bin/sh
+
+# Adpated from: https://github.com/rollkit/rollkit/blob/main/rollups/evm/single/entrypoint.sh
+
+set -e
+
+SIGNER_FILE="/root/.evm-single/config/signer.json"
+
+cd /usr/bin
+sleep 5
+
+# Conditionally add --rollkit.da.address if ROLLKIT_DA_ADDRESS is set
+da_flag=""
+if [ -n "$DA_ADDRESS" ]; then
+da_flag="--rollkit.da.address $DA_ADDRESS"
+fi
+
+# Conditionally add --rollkit.da.auth_token if ROLLKIT_DA_AUTH_TOKEN is set
+da_auth_token_flag=""
+if [ -n "$DA_AUTH_TOKEN" ]; then
+da_auth_token_flag="--rollkit.da.auth_token $DA_AUTH_TOKEN"
+fi
+
+# Conditionally add --rollkit.da.namespace if ROLLKIT_DA_NAMESPACE is set
+da_namespace_flag=""
+if [ -n "$DA_NAMESPACE" ]; then
+da_namespace_flag="--rollkit.da.namespace $DA_NAMESPACE"
+fi
+
+if [[ ! -f "$SIGNER_FILE" ]]; then
+    echo "Initialising rollkit-evm-single..."
+
+    ./evm-single init --rollkit.node.aggregator=true --rollkit.signer.passphrase $EVM_SIGNER_PASSPHRASE
+fi
+
+echo "Starting rollkit-evm-single..."
+
+exec ./evm-single start \
+--evm.jwt-secret $EVM_JWT_SECRET \
+--evm.genesis-hash $EVM_GENESIS_HASH \
+--evm.engine-url $EVM_ENGINE_URL \
+--evm.eth-url $EVM_ETH_URL \
+--rollkit.node.block_time $EVM_BLOCK_TIME \
+--rollkit.node.aggregator=true \
+--rollkit.signer.passphrase $EVM_SIGNER_PASSPHRASE \
+$da_flag \
+$da_auth_token_flag \
+$da_namespace_flag