cronos/cometbft.Dockerfile

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+ARG CRONOS_CRONOS_IMAGE
+ARG CRONOS_CRONOS_VERSION
+FROM ${CRONOS_CRONOS_IMAGE}:${CRONOS_CRONOS_VERSION}
+# Layer the shared CometBFT bootstrap lib + the chain init.sh onto the upstream
+# cronos binary image (alpine-based, has sh+apk; runs nonroot by default — the compose
+# sets user: root so init.sh can apk-add curl and write the /root home).
+USER root
+COPY ./scripts/cometbft-common.sh /usr/local/bin/cometbft-common.sh
+COPY ./scripts/init.sh            /usr/local/bin/init.sh
+RUN chmod +x /usr/local/bin/init.sh /usr/local/bin/cometbft-common.sh
+ENTRYPOINT ["init.sh"]

cronos/scripts/init.sh

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+#!/bin/sh
+
+set -e  # Exit on failure
+
+echo "MONIKER: $MONIKER"
+
+CHAINID=${CHAINID:-cronosmainnet_25-1}
+CHAINNAME=${CHAINNAME:-mainnet}
+API=${API:-eth,txpool,net,debug,web3}
+
+CONFIG_DIR="/root/.cronos/config"
+
+# Create config directory
+mkdir -p "$CONFIG_DIR"
+
+P2P_STRING="tcp:\/\/0\.0\.0\.0\:${P2P_PORT:-10521}"
+NAT_STRING="${IP}:${P2P_PORT:-10521}"
+
+env
+
+# this goes first because it won't overwrite shit
+apk add curl jq
+if [ $? -ne 0 ]; then exit 1; fi
+
+# Source the shared CometBFT helpers
+. /usr/local/bin/cometbft-common.sh
+
+if cronosd init ${MONIKER} --chain-id ${CHAINID} --home /root/.cronos/; then
+    # Define variables
+    GENESIS_URL="https://raw.githubusercontent.com/crypto-org-chain/cronos-mainnet/master/cronosmainnet_25-1/genesis.json"
+    SEEDS="0d5cf1394a1cfde28dc8f023567222abc0f47534@cronos-seed-0.crypto.org:26656,3032073adc06d710dd512240281637c1bd0c8a7b@cronos-seed-1.crypto.org:26656,04f43116b4c6c70054d9c2b7485383df5b1ed1da@cronos-seed-2.crypto.org:26656"
+    
+    # Download config files
+    curl -sL "$GENESIS_URL" -o "$CONFIG_DIR/genesis.json"
+    
+    # somehow it's better to make home static to /root
+    sed -i 's|~/|/root/|g' "$CONFIG_DIR/config.toml"
+    sed -i 's|~/|/root/|g' "$CONFIG_DIR/app.toml"
+else
+    echo "Already initialized, continuing!" >&2
+fi
+
+# Localize home directory paths
+ct_localize_home /root/.cronos/config
+
+# apply a port change to the config
+ct_patch_p2p "$CONFIG_DIR/config.toml" "$IP" "${P2P_PORT:-10521}"
+
+sed -i -e "s/^pruning *=.*/pruning = \"custom\"/" $CONFIG_DIR/app.toml
+sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"100\"/" $CONFIG_DIR/app.toml
+sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"19\"/" $CONFIG_DIR/app.toml
+sed -i -e "s/^indexer *=.*/indexer = \"null\"/" $CONFIG_DIR/config.toml
+
+sed -i "/^\[json-rpc\]/,/^\[/{s|^address = .*|address = \"0.0.0.0:8545\"|}" "$CONFIG_DIR/app.toml"
+sed -i "/^\[json-rpc\]/,/^\[/{s|^ws-address = .*|ws-address = \"0.0.0.0:8546\"|}" "$CONFIG_DIR/app.toml"
+sed -i "/^\[json-rpc\]/,/^\[/{s|^api = .*|api = \"$API\"|}" "$CONFIG_DIR/app.toml"
+
+# Set seeds
+ct_set_persistent_peers "$CONFIG_DIR/config.toml" "$SEEDS"
+
+# Configure state sync using official RPC endpoints
+ct_configure_statesync "$CONFIG_DIR/config.toml" "https://rpc-cronos.crypto.org:443,https://cronos-rpc.publicnode.com:443" 2000
+
+# Update moniker if set
+if [ -n "$MONIKER" ] && [ -f "$CONFIG_DIR/config.toml" ]; then
+    ct_set_moniker "$CONFIG_DIR/config.toml" "$MONIKER"
+fi
+
+exec cronosd start --chain-id ${CHAINID} $@