Update Dockerfile

Dockerfile

@@ -12,6 +12,13 @@ RUN apt-get update && apt-get install -y \
     libffi-dev \
     libxml2-dev \
     libxslt-dev \
+    libxrender1 \
+    libxext6 \
+    libfontconfig1 \
+    libcairo2-dev \
+    libpango1.0-dev \
+    libgdk-pixbuf2.0-dev \
+    libgtk-3-dev \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy requirements first for better Docker layer caching