Update Dockerfile

Dockerfile

@@ -1,16 +1,19 @@
-# 1. Base Image: Open WebUI
+# 1. Base Image
 FROM ghcr.io/open-webui/open-webui:main
 
 # 2. Environment Variables
 ENV PORT=7860
 ENV OLLAMA_BASE_URL=http://localhost:11434
-# Save Ollama models to the data folder so they persist (if you use HF Storage)
 ENV OLLAMA_MODELS=/app/backend/data/ollama
 
-# 3. Install Ollama (requires root)
+# 3. Switch to root
 USER root
+
+# 4. FIX: Install 'zstd' which is required for Ollama installation
+RUN apt-get update && apt-get install -y zstd
+
+# 5. Install Ollama
 RUN curl -fsSL https://ollama.com/install.sh | sh
 
-# 4. Single-line startup command
-# Starts Ollama in background -> Waits 10s -> Starts WebUI
+# 6. Start Ollama (background) -> Wait -> Start WebUI
 CMD bash -c "ollama serve & sleep 10 && /app/backend/start.sh"