Update caddy-fmt.yml

Signed-off-by: Zoey <[email protected]>

.github/workflows/caddy-fmt.yml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@v4
       - name: Read version
         id: version
-        run: echo "version=$(cat Caddy.Dockerfile | grep -wE "FROM caddy:*" | head -1 | sed "s|FROM caddy:\([0-9.]\+\).*|\1|g")" >> $GITHUB_OUTPUT
+        run: echo "version=$(cat Caddy.Dockerfile | grep "^COPY --from=caddy:.*$" | head -1 | sed "s|COPY --from=caddy:\([0-9.]\+\).*|\1|g")" >> $GITHUB_OUTPUT
       - name: caddy-fmt
         run: |
           docker run --rm -v ${{ github.workspace }}/Caddyfile:/etc/caddy/Caddyfile caddy:${{ steps.version.outputs.version }} caddy fmt --overwrite /etc/caddy/Caddyfile