[Chore] Enable full node syncing (#232)

* enable full node syncing

* add comments

---------

Co-authored-by: Yukai Tu <yukai.tu@coinbase.com>

Author: xiaoxiaff

.env.mainnet

@@ -1,6 +1,5 @@
 OP_GETH_GENESIS_FILE_PATH=mainnet/genesis-l2.json
 OP_GETH_SEQUENCER_HTTP=https://mainnet-sequencer.base.org
-OP_GETH_BOOTNODES=enode://87a32fd13bd596b2ffca97020e31aef4ddcc1bbd4b95bb633d16c1329f654f34049ed240a36b449fda5e5225d70fe40bc667f53c304b71f8e68fc9d448690b51@3.231.138.188:30301,enode://ca21ea8f176adb2e229ce2d700830c844af0ea941a1d8152a9513b966fe525e809c3a6c73a2c18a12b74ed6ec4380edf91662778fe0b79f6a591236e49e176f9@184.72.129.189:30301,enode://acf4507a211ba7c1e52cdf4eef62cdc3c32e7c9c47998954f7ba024026f9a6b2150cd3f0b734d9c78e507ab70d59ba61dfe5c45e1078c7ad0775fb251d7735a2@3.220.145.177:30301,enode://8a5a5006159bf079d06a04e5eceab2a1ce6e0f721875b2a9c96905336219dbe14203d38f70f3754686a6324f786c2f9852d8c0dd3adac2d080f4db35efc678c5@3.231.11.52:30301,enode://cdadbe835308ad3557f9a1de8db411da1a260a98f8421d62da90e71da66e55e98aaa8e90aa7ce01b408a54e4bd2253d701218081ded3dbe5efbbc7b41d7cef79@54.198.153.150:30301
 
 # [optional] used to enable geth stats:
 # OP_GETH_ETH_STATS=nodename:secret@host:port
@@ -33,9 +32,13 @@ OP_NODE_RPC_PORT=8545
 OP_NODE_SNAPSHOT_LOG=/tmp/op-node-snapshot-log
 OP_NODE_VERIFIER_L1_CONFS=4
 OP_NODE_ROLLUP_LOAD_PROTOCOL_VERSIONS=true
-OP_NODE_SYNCMODE=execution-layer
 
 # OP_NODE_L1_TRUST_RPC allows for faster syncing, but should be used *only* if your L1 RPC node
 # is fully trusted. It also allows op-node to work with clients such as Erigon that do not
 # support storage proofs:
 # OP_NODE_L1_TRUST_RPC=true
+
+# To enable snapsync, set env vars below:
+# OP_NODE_SYNCMODE=execution-layer
+# OP_GETH_BOOTNODES=enode://87a32fd13bd596b2ffca97020e31aef4ddcc1bbd4b95bb633d16c1329f654f34049ed240a36b449fda5e5225d70fe40bc667f53c304b71f8e68fc9d448690b51@3.231.138.188:30301,enode://ca21ea8f176adb2e229ce2d700830c844af0ea941a1d8152a9513b966fe525e809c3a6c73a2c18a12b74ed6ec4380edf91662778fe0b79f6a591236e49e176f9@184.72.129.189:30301,enode://acf4507a211ba7c1e52cdf4eef62cdc3c32e7c9c47998954f7ba024026f9a6b2150cd3f0b734d9c78e507ab70d59ba61dfe5c45e1078c7ad0775fb251d7735a2@3.220.145.177:30301,enode://8a5a5006159bf079d06a04e5eceab2a1ce6e0f721875b2a9c96905336219dbe14203d38f70f3754686a6324f786c2f9852d8c0dd3adac2d080f4db35efc678c5@3.231.11.52:30301,enode://cdadbe835308ad3557f9a1de8db411da1a260a98f8421d62da90e71da66e55e98aaa8e90aa7ce01b408a54e4bd2253d701218081ded3dbe5efbbc7b41d7cef79@54.198.153.150:30301
+# OP_GETH_SYNCMODE=snap

.env.sepolia

@@ -1,6 +1,5 @@
 OP_GETH_GENESIS_FILE_PATH=sepolia/genesis-l2.json
 OP_GETH_SEQUENCER_HTTP=https://sepolia-sequencer.base.org
-OP_GETH_BOOTNODES=enode://548f715f3fc388a7c917ba644a2f16270f1ede48a5d88a4d14ea287cc916068363f3092e39936f1a3e7885198bef0e5af951f1d7b1041ce8ba4010917777e71f@18.210.176.114:30301,enode://6f10052847a966a725c9f4adf6716f9141155b99a0fb487fea3f51498f4c2a2cb8d534e680ee678f9447db85b93ff7c74562762c3714783a7233ac448603b25f@107.21.251.55:30301
 
 # [optional] used to enable geth stats:
 # OP_GETH_ETH_STATS=nodename:secret@host:port
@@ -33,9 +32,13 @@ OP_NODE_RPC_PORT=8545
 OP_NODE_SNAPSHOT_LOG=/tmp/op-node-snapshot-log
 OP_NODE_VERIFIER_L1_CONFS=4
 OP_NODE_ROLLUP_LOAD_PROTOCOL_VERSIONS=true
-OP_NODE_SYNCMODE=execution-layer
 
 # OP_NODE_L1_TRUST_RPC allows for faster syncing, but should be used *only* if your L1 RPC node
 # is fully trusted. It also allows op-node to work with clients such as Erigon that do not
 # support storage proofs:
 # OP_NODE_L1_TRUST_RPC=true
+
+# To enable snapsync, set env vars below:
+# OP_NODE_SYNCMODE=execution-layer
+# OP_GETH_BOOTNODES=enode://548f715f3fc388a7c917ba644a2f16270f1ede48a5d88a4d14ea287cc916068363f3092e39936f1a3e7885198bef0e5af951f1d7b1041ce8ba4010917777e71f@18.210.176.114:30301,enode://6f10052847a966a725c9f4adf6716f9141155b99a0fb487fea3f51498f4c2a2cb8d534e680ee678f9447db85b93ff7c74562762c3714783a7233ac448603b25f@107.21.251.55:30301
+# OP_GETH_SYNCMODE=snap

geth-entrypoint

@@ -11,7 +11,7 @@ HOST_IP="0.0.0.0"
 P2P_PORT="${P2P_PORT:-30303}"
 ADDITIONAL_ARGS=""
 OP_GETH_GCMODE="${OP_GETH_GCMODE:-archive}"
-OP_GETH_SYNCMODE="${OP_GETH_SYNCMODE:-snap}"
+OP_GETH_SYNCMODE="${OP_GETH_SYNCMODE:-full}"
 
 if [[ -z "$OP_NODE_NETWORK" ]]; then
     echo "expected OP_NODE_NETWORK to be set" 1>&2