Add script to query karura gas prices

ethereum/karura-gas-prices

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+curl --location --request GET 'https://eth-rpc-karura.aca-api.network/' \
+--header 'Content-Type: application/json' \
+--data-raw '{
+    "jsonrpc": "2.0",
+    "method": "eth_getEthGas",
+    "params": [
+        {
+            "gasLimit": 21000000,
+            "storageLimit": 64100
+        }
+    ],
+    "id": 1
+}'
+printf "\n"

ethereum/truffle-config.js

@@ -174,13 +174,14 @@ module.exports = {
       provider: () => {
         return new HDWalletProvider(
           process.env.MNEMONIC,
-          // To use this local host, needed to run this: ENDPOINT_URL=wss://karura-rpc-1.aca-api.network npx @acala-network/eth-rpc-adapter@latest
+          // NOTE: To use this local host, needed to run this: ENDPOINT_URL=wss://karura-rpc-1.aca-api.network npx @acala-network/eth-rpc-adapter@latest
           "http://localhost:8545"
           //"https://eth-rpc-karura.aca-api.network/"
         );
       },
       network_id: 686,
-      gasPrice: "0x2f7e8803ea",
+      // NOTE: run ./karura-gas-prices and update the following two values, otherwise the transactions will likely fail
+      gasPrice: "0x2f8b8903ea",
       gasLimit: "0x329b140",
       gas: "0x329b140",
     },