Update workflow to push Docker image to registry

.gitea/workflows/build.yaml

@@ -31,8 +31,18 @@ jobs:
             echo "Web application loaded successfully. HTTP status: $HTTP_STATUS"
           fi
           
-      - name: Cleanup
+      - name: Cleanup Test Container
         if: always()
         run: |
           docker stop todoizer || true
           docker rm todoizer || true
+
+      - name: Login to Gitea Container Registry
+        if: success()
+        run: echo "${{ github.token }}" | docker login gitea.krisforbes.ca -u ${{ github.actor }} --password-stdin
+
+      - name: Push Docker image
+        if: success()
+        run: |
+          docker tag todoizer-app:latest gitea.krisforbes.ca/krisf/todoizer:latest
+          docker push gitea.krisforbes.ca/krisf/todoizer:latest