Update Dockerfile

Dockerfile

@@ -2,9 +2,6 @@
 FROM python:3.9-slim
 
 # 1. Install LaTeX and dependencies
-# We run 'apt-get update' and install all necessary TeX Live packages
-# 'texlive-science' is needed for your siunitx package
-# 'texlive-pictures' is needed for your pgfplots package
 RUN apt-get update && apt-get install -y \
     texlive-latex-base \
     texlive-latex-extra \
@@ -15,23 +12,25 @@ RUN apt-get update && apt-get install -y \
     ghostscript \
     && rm -rf /var/lib/apt/lists/*
 
-# 2. Set the working directory
+# 2. Create a non-root user FIRST
+RUN useradd -m -u 1000 user
+
+# 3. Set the working directory and ensure the user owns it
 WORKDIR /app
+RUN chown user:user /app
 
-# 3. Copy requirements and install Python libraries
-COPY requirements.txt .
+# 4. Copy requirements and install dependencies
+COPY --chown=user:user requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-# 4. Copy the rest of the app code
-COPY . .
+# 5. Copy the rest of the application with correct ownership
+#    (This is the CRITICAL fix)
+COPY --chown=user:user . .
 
-# 5. Create a non-root user (Security best practice for Hugging Face)
-# This prevents permission errors
-RUN useradd -m -u 1000 user
+# 6. Switch to the non-root user
 USER user
 ENV HOME=/home/user \
     PATH=/home/user/.local/bin:$PATH
 
-# 6. Command to run the app
-# Streamlit runs on port 8501 by default, but HF expects 7860
+# 7. Run the application
 CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]