feat: NVSHAS-9495 SLSA build

1. Provide cross-platform/standalone Dockerfile
2. release.yml to publish SLSA-capable artifacts
3. Provide build target, test-image, build-image and push-image to sync
   with rancher.
4. Switch to golang:1.22 as its base image

.github/workflows/release.yml

@@ -67,8 +67,8 @@ jobs:
       uses: docker/login-action@v3
       with:
         registry: docker.io
-        username: ${{ secrets.DOCKER_USERNAME }}
-        password: ${{ secrets.DOCKER_PASSWORD }}
+        username: ${{ env.DOCKER_USERNAME }}
+        password: ${{ env.DOCKER_PASSWORD }}
     - name: Login to registry
       uses: docker/login-action@v3
       with: