Create build-attested-image.yml (#217)

* Create build-attested-image.yml
CI:
Introduce a build-attested-image workflow that builds and pushes a Docker image to GitHub Container Registry and generates build provenance attestations.
Signed-off-by: Dargon789 <64915515+Dargon789@users.noreply.github.com>

* Update .github/workflows/build-attested-image.yml

Co-authored-by: sourcery-ai[bot] <58596630+sourcery-ai[bot]@users.noreply.github.com>
Signed-off-by: Dargon789 <64915515+Dargon789@users.noreply.github.com>

---------

Signed-off-by: Dargon789 <64915515+Dargon789@users.noreply.github.com>
Co-authored-by: sourcery-ai[bot] <58596630+sourcery-ai[bot]@users.noreply.github.com>

Author: Dargon789

.github/workflows/build-attested-image.yml

@@ -0,0 +1,44 @@
+name: build-attested-image
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      packages: write
+      contents: read
+      attestations: write
+    env:
+      REGISTRY: ghcr.io
+      IMAGE_NAME: ${{ github.repository }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push image
+        id: push
+        uses: docker/build-push-action@v5.0.0
+        with:
+          context: .
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }}
+      - name: Attest
+        uses: actions/attest-build-provenance@v1
+        id: attest
+        with:
+          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          subject-digest: ${{ steps.push.outputs.digest }}
+          push-to-registry: true
+