build: Replace drone release with GHA

Signed-off-by: Paulo Gomes <[email protected]>

.github/workflows/release.yml

@@ -0,0 +1,48 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+# GitHub settings / example values:
+#
+# org level vars:
+#   - PUBLIC_REGISTRY: docker.io
+# repo level vars:
+#   - PUBLIC_REGISTRY_REPO: rancher
+# repo level secrets:
+#   - PUBLIC_REGISTRY_USERNAME
+#   - PUBLIC_REGISTRY_PASSWORD
+
+permissions:
+  contents: write # Upload artefacts to release.
+
+jobs:
+
+  publish-public:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Login to DockerHub
+      uses: docker/login-action@v3
+      with:
+        registry: ${{ vars.PUBLIC_REGISTRY }}
+        username: ${{ secrets.PUBLIC_REGISTRY_USERNAME }}
+        password: ${{ secrets.PUBLIC_REGISTRY_PASSWORD }}
+    - name: Setup QEMU
+      uses: docker/setup-qemu-action@v3
+    - name: Setup Docker Buildx
+      uses: docker/setup-buildx-action@v3
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Build and push all image variations
+      run: |
+        make image-push
+        TAG="${TAG}-amd64" TARGET_PLATFORMS=linux/amd64 make image-push
+        TAG="${TAG}-arm64" TARGET_PLATFORMS=linux/arm64 make image-push
+        TAG="${TAG}-s390x" TARGET_PLATFORMS=linux/s390x make image-push
+      env:
+        TAG: ${{ github.ref_name }}
+        REPO: ${{ vars.PUBLIC_REGISTRY }}/${{ vars.PUBLIC_REGISTRY_REPO }}