Update Dockerfile

Dockerfile

@@ -2,39 +2,33 @@ FROM python:3.9-slim
 
 WORKDIR /app
 
-# Install system dependencies including OpenGL libraries
+# Install system dependencies
 RUN apt-get update && apt-get install -y \
     build-essential \
     curl \
     software-properties-common \
     git \
     ffmpeg \
-    libglib2.0-0 \
     libsm6 \
     libxext6 \
     libxrender-dev \
-    libgomp1 \
     libgl1-mesa-glx \
-    libglib2.0-0 \
-    libgtk-3-0 \
-    libavcodec-dev \
-    libavformat-dev \
-    libswscale-dev \
-    libv4l-dev \
-    libxvidcore-dev \
-    libx264-dev \
-    libjpeg-dev \
-    libpng-dev \
-    libtiff-dev \
-    libatlas-base-dev \
-    gfortran \
-    wget \
+    # Add fontconfig for font management
+    fontconfig \
     && rm -rf /var/lib/apt/lists/*
 
+# --- FIX FOR PERMISSION ERRORS ---
+# Create writable cache directories inside the app's working directory
+RUN mkdir -p /app/.cache/matplotlib /app/.cache/fontconfig
+# Tell Matplotlib and Fontconfig to use these new directories
+ENV MPLCONFIGDIR /app/.cache/matplotlib
+ENV FONTCONFIG_PATH /app/.cache/fontconfig
+# --- END OF FIX ---
+
 COPY requirements.txt ./
-COPY src/ ./src/
+RUN pip3 install --no-cache-dir -r requirements.txt
 
-RUN pip3 install -r requirements.txt
+COPY src/ ./src/
 
 EXPOSE 8501