Adding workflow to push to ghcr

.github/workflows/docker-push-to-ecr.yml

@@ -1,4 +1,4 @@
-name: Docker push for main branch
+name: Docker push to ECR for main branch
 
 on:
   workflow_call:

.github/workflows/docker-push-to-ghcr.yml

@@ -0,0 +1,78 @@
+name: Docker push to GHCR for main branch
+
+on:
+  workflow_call:
+    inputs:
+      image_name_suffix:
+        description: 'Custom suffix for the Docker image name. Defaults to "github.event.repository.name"'
+        required: false
+        type: string
+      dockerfile_name:
+        description: 'Custom Dockerfile name. Defaults to "Dockerfile"'
+        required: false
+        type: string
+    secrets:
+      SLACK_NOTIFY_URL:
+        required: true
+
+jobs:
+  build-and-publish:
+    permissions:
+      contents: read
+      id-token: write
+      attestations: write
+      packages: write
+
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/decisiveai/${{ inputs.image_name_suffix || github.event.repository.name }}
+          tags: |
+            type=sha,enable=true,priority=100,prefix=sha-,suffix=,format=short
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}},enable=${{ !startsWith(github.ref, 'refs/tags/v0.0') }}
+            type=semver,pattern={{major}},enable=${{ !startsWith(github.ref, 'refs/tags/v0.') }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push
+        id: push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          file: ${{ inputs.dockerfile_name || 'Dockerfile' }}
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64
+          provenance: true
+          sbom: true
+
+      - name: Generate artifact attestation
+        uses: actions/attest-build-provenance@v3
+        with:
+          subject-name: ghcr.io/decisiveai/${{ inputs.image_name_suffix || github.event.repository.name }}
+          subject-digest: ${{ steps.push.outputs.digest }}
+          push-to-registry: true
+
+  notify-on-failure:
+    needs: build-and-publish
+    if: failure() && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v'))
+    uses: DecisiveAI/ci/.github/workflows/slack-notify.yml@main
+    secrets:
+      SLACK_NOTIFY_URL: ${{ secrets.SLACK_NOTIFY_URL }}