diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index d710dec..d370f8b 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -1,37 +1,50 @@
-# CI for command line NodeJS Applications
 name: nodejs
-on:
+
+on: 
   push:
      paths:
       - "**/**"
       - "!**/*.md/**"
-
 env:
-  CI: true
+  COMMIT_SHA: ${{ github.event.pull_request.head.sha }}
+  PULL_NUMBER: ${{ github.event.pull_request.number }}
+  RUN_ID: ${{ github.run_id }}
   FORCE_COLOR: 2
 
 jobs:
-  run:
-    name: Node ${{ matrix.node }} on ${{ matrix.os }}
+  pipeline:
+    name: Node ${{ matrix.node-version }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
 
     strategy:
       fail-fast: false
       matrix:
-        node: ['14']
+        node-version: ['16.x']
         os: ['ubuntu-latest']
 
     steps:
-      - name: Clone repository
-        uses: actions/checkout@v2.3.4
-
-      - name: Set up Node.js
-        uses: actions/setup-node@v2.1.5
+      - uses: actions/checkout@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
         with:
-          node-version: ${{ matrix.node }}
+          node-version: ${{ matrix.node-version }}
 
-      - name: Install npm dependencies
-        run: npm install
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - uses: actions/cache@v3
+        id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+            
+      - name: Install project dependencies
+        run: yarn --prefer-offline
+        id: install
 
-      - name: Run build
-        run: npm run build
+      - name: Install project dependencies
+        run: yarn run build
+        id: build
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..9b8ba37
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,17 @@
+version: '3.1'
+
+services:
+
+  mongo:
+    image: mongo
+    restart: always
+    ports:
+      - 27017:27017
+
+  mongo-express:
+    image: mongo-express
+    restart: always
+    ports:
+      - 8081:8081
+    environment:
+      ME_CONFIG_MONGODB_URL: mongodb://mongo:27017/
diff --git a/example.env b/example.env
index 36b8b87..cd020d3 100644
--- a/example.env
+++ b/example.env
@@ -21,6 +21,8 @@ CORS_ORIGIN=''
 GAS_STATION_API_URL=''
 BLOCKNATIVE_API_URL=''
 
+CHAIN_ID=0x1
+
 UNIV2="0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D"
 UNIV3="0xE592427A0AEce92De3Edee1F18E0157C05861564"
 SUSHIV2="0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F"
@@ -47,9 +49,3 @@ KYBER="https://api.kyber.network/tokenlist"
 MYCRYPTOAPI="https://uniswap.mycryptoapi.com/"
 ZAPPER="https://zapper.fi/api/token-list"
 ZERION="https://tokenlist.zerion.eth.link"
-
-# Heroku
-# cant run on free tier more than 20 days of the month
-#HEROKU_APP_NAME_CONFIRMED_WORKER=''
-#HEROKU_APP_NAME_PENDING_WORKER=''
-#HEROKU_APP_NAME_WEBSOCKET_WORKER=''
diff --git a/package.json b/package.json
index 7b26bd1..f244040 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "mempool-shark",
   "private": false,
-  "version": "0.2.1",
+  "version": "0.3.0",
   "author": "SEE CONTRIBUTORS",
   "engines": {
     "node": ">=14.0.0"
@@ -23,7 +23,6 @@
     "dev:mempool": "npx ts-node-dev ./src/listener-mempool.ts",
     "dev:confirm": "npx ts-node-dev ./src/listener-confirmation.ts",
     "dev:ws": "npx ts-node-dev ./src/_websocket-server.ts",
-    "init:heroku": "npx ts-node ./src/utils/initServer/set-heroku.ts",
     "reset:hard": "npx ts-node ./src/utils/dev-utils/drop-transactions.ts",
     "reset:txs": "npx ts-node ./src/utils/dev-utils/reset-transactions.ts",
     "reset:txc": "npx ts-node ./src/utils/dev-utils/reset-transactions-c.ts",
diff --git a/tsconfig.json b/tsconfig.json
index a021324..c0c267b 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -11,10 +11,11 @@
     "outDir": "./lib",
     "sourceMap": true,
     "strict": true,
+     "target": "es2020",
     "skipLibCheck": true
   },
   "include": [
     "src/**/*.ts"
   ],
   "exclude": ["test", "node_modules"]
-}
\ No newline at end of file
+}