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@@ -10,24 +10,31 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
-# ── App directory ──────────────────────────────────────────────────────────────
-WORKDIR /app
+# ── Create a non-root user (Required for Hugging Face Spaces) ──────────────────
+RUN useradd -m -u 1000 user
+USER user
+
+# ── Setup environment ──────────────────────────────────────────────────────────
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH
+
+# Set the working directory to the user's home directory
+WORKDIR $HOME/app
 
 # ── Install Python dependencies ────────────────────────────────────────────────
-COPY web_app/requirements.txt ./requirements.txt
+# Copy requirements first to leverage Docker cache
+COPY --chown=user web_app/requirements.txt ./requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt
 
 # ── Copy full application source ───────────────────────────────────────────────
-COPY . .
+COPY --chown=user . $HOME/app
 
 # ── Create writable directories ────────────────────────────────────────────────
-RUN mkdir -p outputs storage web_app/__pycache__ \
-    && chmod -R 777 /app
+RUN mkdir -p outputs storage web_app/__pycache__
 
 # ── Streamlit config — disable telemetry, set port ────────────────────────────
-RUN mkdir -p .streamlit \
-    && cp web_app/streamlit_config.toml .streamlit/config.toml \
-    && chmod -R 777 .streamlit
+RUN mkdir -p $HOME/.streamlit \
+    && cp web_app/streamlit_config.toml $HOME/.streamlit/config.toml
 
 # ── HF Spaces: port 7860 ──────────────────────────────────────────────────────
 EXPOSE 7860