Try using ko to build images

Signed-off-by: Xe Iaso <me@xeiaso.net>

.github/workflows/docker.yml

@@ -8,6 +8,9 @@ on:
   pull_request:
     branches: [ "main" ]
 
+env:
+  DOCKER_METADATA_SET_OUTPUT_ENV: "true"
+
 permissions:
   contents: read
   packages: write
@@ -20,6 +23,9 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          fetch-tags: true
+          fetch-depth: 0
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -27,6 +33,12 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.24.x'
+
+      - uses: ko-build/setup-ko@v0.8
+
       - name: Log into registry 
         uses: docker/login-action@v3
         with:
@@ -42,16 +54,8 @@ jobs:
 
       - name: Build and push
         id: build
-        uses: docker/build-push-action@v6
-        with:
-          context: .
-          cache-to: type=gha
-          cache-from: type=gha
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          platforms: linux/arm64/v8,linux/amd64
-          sbom: true
-          push: true
+        run: |
+          go run ./cmd/containerbuild --docker-repo ghcr.io/techarohq/anubis --slog-level debug
       
       - name: Generate artifact attestation
         uses: actions/attest-build-provenance@v2