first docker ci implementation

Author: yamilbknsu

.github/workflows/docker.yml

@@ -0,0 +1,55 @@
+name: Build Docker Image
+
+on:
+  push:
+    branches: [main, ci]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}/demos
+
+jobs:
+  publish:
+    name: Build and publish Docker image
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' && github.actor != 'dependabot[bot]'
+    permissions:
+      contents: read
+      packages: write
+    
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Buildx
+        uses: docker/setup-buildx-action@v3
+    
+      - name: Docker meta (tags)
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          tags: |
+            type=ref,event=branch
+            type=sha
+            type=semver,pattern={{version}},enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max