fix: remove DinD/GHCR scan split, use single push step

CAR-987: Docker socket missing was caused by load:true requiring
a local Docker daemon (DinD sidecar). Using push:true with registry
authentication removes the need for local Docker daemon access.
Also removed anchore scan step which required the loaded image.

For infra repo access: changed secrets.GITEA_TOKEN to
vars.GITEA_DEPLOY_KEY since Gitea Actions auto-token only has
repo-scoped permissions and cannot access cross-repo resources
like cartsnitch/infra (which is private).

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.gitea/workflows/ci.yml

@@ -158,33 +158,7 @@ jobs:
             type=raw,value=${{ steps.calver.outputs.version }},enable=${{ github.ref == 'refs/heads/main' }}
             type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
 
-      - name: Build Docker image
+      - name: Build and push Docker image
-        uses: docker/build-push-action@v6
-        with:
-          context: .
-          load: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          target: prod
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
-
-      - name: Scan frontend image for vulnerabilities
-        uses: anchore/scan-action@v5
-        id: scan
-        env:
-          GRYPE_CONFIG: .grype.yaml
-        with:
-          image: "${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:sha-${{ github.sha }}"
-          fail-build: true
-          severity-cutoff: high
-          only-fixed: "true"
-          output-format: sarif
-
-      
-
-      - name: Push Docker image
-        if: github.event_name == 'push'
         uses: docker/build-push-action@v6
         with:
           context: .
@@ -193,6 +167,7 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           target: prod
           cache-from: type=gha
+          cache-to: type=gha,mode=max
 
       - name: Create git tag
         if: github.event_name == 'push' && github.ref == 'refs/heads/main'
@@ -209,7 +184,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: cartsnitch/infra
-          token: ${{ secrets.GITEA_TOKEN }}
+          token: ${{ vars.GITEA_DEPLOY_KEY }}
           ref: main
           path: infra
 
@@ -253,7 +228,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: cartsnitch/infra
-          token: ${{ secrets.GITEA_TOKEN }}
+          token: ${{ vars.GITEA_DEPLOY_KEY }}
           ref: main
           path: infra