Update Dockerfile

Dockerfile

@@ -1,13 +1,17 @@
 FROM python:3.9-slim
 
-# Install system dependencies
+# Install dependencies
 RUN apt-get update && apt-get install -y \
     chromium \
     chromium-driver \
+    fonts-dejavu \
+    libfontconfig1 \
     && rm -rf /var/lib/apt/lists/*
 
-# Set environment variables for Chromium
-ENV PATH="/usr/lib/chromium/:$PATH"
+# Set environment variables for Matplotlib & Fontconfig
+ENV MPLCONFIGDIR=/tmp/matplotlib
+ENV FONTCONFIG_PATH=/etc/fonts
+ENV HOME=/root
 
 # Install Python dependencies
 COPY requirements.txt .
@@ -17,5 +21,8 @@ RUN pip install --no-cache-dir -r requirements.txt
 COPY . /app
 WORKDIR /app
 
+# Create Fontconfig cache (optional)
+RUN mkdir -p /root/.cache/fontconfig && fc-cache -f -v
+
 # Run application
 CMD ["python", "app.py"]