Create build.yml

.github/workflows/build.yml

@@ -0,0 +1,52 @@
+name: CI Build and Deploy
+
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  build:
+    if: contains(github.event.pull_request.labels.*.name, 'CI:Build')
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Log in to Docker Hub
+        run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
+
+      - name: Build Docker image
+        run: |
+          docker build -t ipangelov/go-ethereum:latest .
+
+      - name: Push Docker image to Docker Hub
+        run: |
+          docker push ipangelov/go-ethereum:latest
+
+  deploy:
+    if: contains(github.event.pull_request.labels.*.name, 'CI:Deploy')
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+      
+      - name: Start local devnet
+        run: |
+          docker-compose up -d
+
+      - name: Deploy Hardhat contracts
+        run: |
+          cd hardhat
+          npx hardhat run scripts/deploy.js --network localhost
+
+      - name: Build & push pre-deployed contracts image
+        run: |
+          docker commit $(docker ps -q --filter ancestor=ipangelov/go-ethereum:latest) ipangelov/go-ethereum:contracts
+          docker push ipangelov/go-ethereum:contracts
+
+      - name: Run Hardhat tests
+        run: |
+          cd hardhat
+          npx hardhat test