Update Dockerfile

Dockerfile

@@ -1,32 +1,37 @@
-# Use the official Python image
+# Start from a lightweight Python image
 FROM python:3.9-slim
 
-# 1. Install System Dependencies (LaTeX)
-# We use --no-install-recommends to keep the image smaller, but install the necessary parts.
-RUN apt-get update && \
-    apt-get install -y \
+# 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 \
-    texlive-science \
     texlive-fonts-recommended \
     texlive-fonts-extra \
+    texlive-science \
+    texlive-pictures \
     ghostscript \
     && rm -rf /var/lib/apt/lists/*
 
-# 2. Set up the working directory
+# 2. Set the working directory
 WORKDIR /app
 
-# 3. Copy your specific requirements file first (for caching)
+# 3. Copy requirements and install Python libraries
 COPY requirements.txt .
-
-# 4. Install Python dependencies
 RUN pip install --no-cache-dir -r requirements.txt
 
-# 5. Copy the rest of your application code
+# 4. Copy the rest of the app code
 COPY . .
 
-# 6. Expose the port used by Streamlit (7860 is standard for Hugging Face)
-EXPOSE 7860
+# 5. Create a non-root user (Security best practice for Hugging Face)
+# This prevents permission errors
+RUN useradd -m -u 1000 user
+USER user
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH
 
-# 7. Run the application
+# 6. Command to run the app
+# Streamlit runs on port 8501 by default, but HF expects 7860
 CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]