fix: add the missing .git/ for fe build

.dockerignore

@@ -1,2 +1 @@
-.git/
 **/node_modules

.github/workflows/docker.yml

@@ -10,6 +10,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # for vite extracting git tag/hash
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v5

Dockerfile

@@ -1,7 +1,7 @@
 # build frontend
 FROM node:21 as fe
 WORKDIR /src
-COPY ./frontend ./
+COPY .git frontend ./
 RUN npm i && npm run build
 
 # build backend