Add workflow for Docker image building

.github/workflows/build.yml

@@ -0,0 +1,39 @@
+name: Build and Push Image
+on: push
+
+env:
+  IMAGE_NAME: mopad
+  IMAGE_TAGS: latest ${{ github.sha }} ${{ github.ref_name }}
+  IMAGE_REGISTRY: docker://ghcr.io/hulks/
+  REGISTRY_USER: ${{ github.actor }}
+  REGISTRY_PASSWORD: ${{ github.token }}
+
+jobs:
+  build:
+    name: Build and push image
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build Image
+        id: build-image
+        uses: redhat-actions/buildah-build@v2
+        with:
+          image: ${{ env.IMAGE_NAME }}
+          tags: ${{ env.IMAGE_TAGS }}
+          containerfiles: |
+            ./Dockerfile
+
+      - name: Push to ghcr.io
+        id: push-to-registry
+        uses: redhat-actions/push-to-registry@v2
+        with:
+          image: ${{ steps.build-image.outputs.image }}
+          tags: ${{ steps.build-image.outputs.tags }}
+          registry: ${{ env.IMAGE_REGISTRY }}
+          username: ${{ env.REGISTRY_USER }}
+          password: ${{ env.REGISTRY_PASSWORD }}
+
+      - name: Echo outputs
+        run: |
+          echo "${{ toJSON(steps.push-to-registry.outputs) }}"