Initial version from github actions workflow

.github/workflows/build_and_test.yml

@@ -0,0 +1,59 @@
+name: Build and Test
+
+on:
+  push:
+    branches:
+      - '**'
+
+jobs:
+  building-rskj-and-powpeg-node:
+    runs-on: ubuntu-latest
+    container:
+      image: openjdk:8-jdk
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup System Tools
+        run: |
+          apt update -y
+          apt install -y gnupg2 curl
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - uses: actions/checkout@v4
+      - name: Pull rskj
+        with:
+          repository: rsksmart/rskj
+          path: './rskj'
+        run: |
+          cd rskj
+          ls -la
+#          ./configure.sh && chmod +x gradlew
+#          ./gradlew --no-daemon clean build -x test
+
+      - uses: actions/checkout@v4
+      - name: Pull powpeg-node
+        with:
+          repository: rsksmart/powpeg-node
+          path: './powpeg-node'
+        run: |
+          cd powpeg-node
+          ls -la
+#          ./configure.sh && chmod +x gradlew
+#          ./gradlew --no-daemon clean build
+
+      - uses: actions/cache@v4
+        name: Cache Gradle
+        id: cache-gradle
+        with:
+          path: |
+            .gradle/caches
+            gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - name: Get gradle wrapper and build dependencies
+        run: |
+          ./configure.sh
+          ./gradlew --no-daemon dependencies