solve CI issue

.github/workflows/ci.yml

@@ -16,7 +16,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Setup Node.js environment
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
+        with: 
+          node-version: '12'
+          check-latest: true
       - name: Cache npm dependencies
         uses: actions/cache@v1
         with:
@@ -27,4 +30,4 @@ jobs:
       - name: Install npm dependencies
         run: npm install
       - name: Run tests
-        run: npm run test:ci
+        run: npm run test:ci

package.json

@@ -4,19 +4,20 @@
   "description": "Contracts to facilitate transfer of assets between Ethereum Main Network and Matic Network, using security of Matic POS layer",
   "main": "index.js",
   "scripts": {
-    "testrpc": "npx hardhat node --port 9545",
+    "testrpc": "hardhat node --port 9545",
     "template:process": "node scripts/process-templates.js",
     "bor": "cd test-blockchain && bash run-docker.sh",
     "bor:clean": "cd test-blockchain && bash stop-docker.sh",
     "truffle": "truffle",
-    "build": "npx hardhat clean && npx hardhat compile",
+    "hardhat": "hardhat",
+    "build": "hardhat clean && hardhat compile",
     "migrate:2": "truffle migrate --network root --f 2 --to 2",
     "migrate:3": "truffle migrate --network child --f 3 --to 3",
     "migrate:4": "truffle migrate --network root --f 4 --to 4",
     "migrate:5": "truffle migrate --network child --f 5 --to 5",
     "migrate": "npm run migrate:2 && npm run migrate:3 && npm run migrate:4 && npm run migrate:5",
     "change-owners": "truffle exec scripts/change-owners.js",
-    "test": "npx hardhat test",
+    "test": "hardhat test",
     "lint": "npm run lint:sol && npm run lint:js",
     "lint:js": "eslint test/**/*.js",
     "lint:sol:fix": "solium -d contracts/ --fix",

scripts/run-test.sh

@@ -11,7 +11,7 @@ PWD=$(pwd)
 
 cleanup() {
   echo "Cleaning up"
-  pkill -f ganache-cli
+  # pkill -f ganache-cli
   cd $PWD/test-blockchain
   bash stop-docker.sh
   bash clean.sh
@@ -30,6 +30,7 @@ start_blockchain() {
 }
 
 # process templates
+node --version
 npm run template:process
 
 echo "Starting our own testrpc instance"

truffle-config.js

@@ -55,15 +55,15 @@ module.exports = {
       network_id: '*', // match any network
       skipDryRun: true,
       gas: 7000000,
-      gasPrice: '0'
+      gasPrice: '900000000'
     },
     child: {
       host: 'localhost',
       port: 8545,
       network_id: '*', // match any network
       skipDryRun: true,
       gas: 7000000,
-      gasPrice: '0'
+      gasPrice: '900000000'
     },
     mumbaiRoot: {
       provider: () =>