Update Dockerfile

Dockerfile

@@ -1,17 +1,32 @@
 # ---------------------------------------------------------
 # 1️⃣  Use the official OpenWebUI image (latest tag)
 # ---------------------------------------------------------
-FROM ghcr.io/open-webui/open-webui:latest
+FROM ghcr.io/open-webui/open-webui:main
+
 # ---------------------------------------------------------
-# 2️⃣  Enable the OpenAI‑compatible API (required for /v1/*)
+# 2️⃣  Set Environment Variables
 # ---------------------------------------------------------
 ENV ENABLE_OPENAI_API=true
 ENV DISABLE_EMBEDDINGS=false
+# Explicitly set the data directory to a path we control
+ENV DATA_DIR=/app/backend/data
+
+# ---------------------------------------------------------
+# 3️⃣ Fix Permissions for Hugging Face Spaces
+# ---------------------------------------------------------
+# HF Spaces run as user 1000. We must ensure this user has read/write
+# access to the data directory where the SQLite DB is created.
 USER root
-RUN mkdir -p /app/data && chown -R 1000:1000 /app/data && chmod -R 777 /app/data
+RUN mkdir -p $DATA_DIR && \
+    chown -R 1000:1000 /app && \
+    chmod -R 777 $DATA_DIR
+
 USER 1000
+
 # ---------------------------------------------------------
-# 3️⃣  (Optional) Expose a different host port – HF will map
-#    the container’s 8080 → the Space’s public URL automatically.
+# 4️⃣ Expose port
 # ---------------------------------------------------------
+# Open WebUI defaults to 8080. If HF Spaces expects 7860, 
+# you MUST tell Open WebUI to run on 7860 using the PORT env var.
+ENV PORT=7860
 EXPOSE 7860