Merge pull request #27 from 0xPolygonHermez/fea/gha

Cherry-pick #26: Add GHA to push image on TAG

.github/workflows/push-docker-tagged.yml

@@ -0,0 +1,33 @@
+on:
+    push:
+      tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+*' # this action will only run on tags that follow semver
+
+jobs:
+    build:
+      runs-on: ubuntu-latest
+      steps:
+        - name: Checkout
+          uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
+
+        - name: Set up QEMU
+          uses: docker/setup-qemu-action@v3
+
+        - name: Set up Docker Buildx
+          uses: docker/setup-buildx-action@v3
+
+        - name: Login to DockerHub
+          uses: docker/login-action@v3
+          with:
+            username: ${{ secrets.DOCKERHUB_USERNAME }}
+            password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+        - name: Build and push
+          id: docker_build
+          uses: docker/build-push-action@v5
+          with:
+            context: .
+            platforms: linux/amd64,linux/arm64
+            push: true
+            tags: |
+              hermeznetwork/zkevm-seqsender:${{ github.ref_name }}