added build pipeline

.github/workflows/docker-publish.yml

@@ -0,0 +1,53 @@
+name: Build and Push Docker Image
+
+on:
+  schedule:
+    # Runs at 00:00 UTC every Sunday
+    - cron: '0 0 * * 0'
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: self-hosted
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build Docker image (no push)
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          load: true 
+          tags: distrolessdevops/nginx-distroless:latest 
+
+  push:
+    runs-on: self-hosted
+    needs: build
+    if: github.ref == 'refs/heads/main' && github.event_name != 'pull_request'
+    steps:
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Push Docker image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: distrolessdevops/nginx-distroless:latest
+
+      - name: Logout from Docker Hub
+        if: always()
+        run: docker logout