Add image building github action

.github/workflows/docker-publish.yml

@@ -0,0 +1,43 @@
+name: Publish Docker Image
+
+on:
+  push:
+    branches: ['main', 'dev']
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Buildah Action
+        id: build_image
+        uses: redhat-actions/buildah-build@v2
+        with:
+          image: ${{ env.IMAGE_NAME }}
+          tags: ${{ steps.meta.outputs.tags }}
+          oci: true
+          containerfiles: |
+            ./Dockerfile.rahti
+
+      - name: Push To GHCR
+        uses: redhat-actions/push-to-registry@v2
+        with:
+          tags: ${{ steps.build_image.outputs.tags }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}