add workflow

.github/workflows/testnets.yml

@@ -0,0 +1,56 @@
+name: docker-image
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - feat/wasm/testnets
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        name: [harkonnen corrino ordos atreides]
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+              type=raw,value=${{ matrix.name }}
+
+      - name: Build docker image
+        uses: docker/build-push-action@v3
+        with:
+          push: true
+          file: scripts/containers/Dockerfile.alpine
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: ACC_PREFIX={{ matrix.name }}
+