fix HF writable data directory

Co-authored-by: Cursor <cursoragent@cursor.com>

Dockerfile

@@ -42,13 +42,13 @@ RUN apt-get update && \
 # HF Spaces runs the container as uid 1000 and expects the app to do the
 # same; with a non-root user we cannot bind privileged ports, but :7860 is
 # fine.
-RUN useradd -m -u 1000 user
+RUN useradd -m -u 1000 user && mkdir -p /home/user/data && chown user:user /home/user/data
 USER user
 ENV HOME=/home/user \
     PATH=/home/user/.local/bin:$PATH \
     PYTHONUNBUFFERED=1 \
     CORS_ORIGINS=* \
-    DATA_DIR=/data \
+    DATA_DIR=/home/user/data \
     CONFIG_PATH=/home/user/app/muscle_growth_config.yaml
 
 WORKDIR $HOME/app

README.md

@@ -18,7 +18,7 @@ This Space ships as a single Docker image built from the repository root [`Docke
 
 1. Builds the React frontend at image-build time with `REACT_APP_API_URL=""` so every `fetch` uses relative URLs.
 2. Serves the bundled SPA from FastAPI at `/`, with the API on `/api/...`, `/auth/...`, etc., on the same `:7860` origin.
-3. Persists user data in **SQLite via `aiosqlite`** at `${DATA_DIR}/`. Mount a Hugging Face Storage Bucket at `/data` to survive Space rebuilds.
+3. Persists user data in **SQLite via `aiosqlite`** at `${DATA_DIR}/` (default `/home/user/data` in the Docker image). Mount a Hugging Face Storage Bucket there to survive Space rebuilds.
 
 ### Required Space secrets