add: git-lfs to Dockerfile

.gitea/workflows/build_blog_image.yml

@@ -10,7 +10,9 @@ jobs:
     runs-on: linux_amd
     steps:
       - name: checkout code
-        uses: actions/checkout@v3
+        uses: https://gitea.com/actions/checkout@v3
+        with:
+          lfs: 'true'
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx

README.md

@@ -5,4 +5,5 @@
 export PATH=$PATH:/usr/local/go/bin
 CGO_ENABLED=1 go install -tags extended github.com/gohugoio/hugo@latest
 git submodule update --recursive
+git lfs pull
 ```