feat: add git LFS and rsync for docs

Dockerfile

@@ -15,7 +15,7 @@ FROM node:26-trixie-slim@sha256:a1d9d671994fc2d26e297ac56b4b1522a8bc7fa71c43b14c
 # calls in the workflows. The C compiler is not installed here: pixi brings it.
 RUN apt-get update \
   && apt-get install -y --no-install-recommends \
-    git ca-certificates curl \
+    git git-lfs rsync ca-certificates curl \
   && rm -rf /var/lib/apt/lists/*
 
 COPY --from=ghcr.io/prefix-dev/pixi:0.76.1 /usr/local/bin/pixi /usr/local/bin/pixi