Update Dockerfile

Dockerfile

@@ -3,7 +3,7 @@ FROM python:3.10-slim
 # Set the DEBIAN_FRONTEND to noninteractive
 ENV DEBIAN_FRONTEND=noninteractive
 
-# 1. Install the base dependencies that we know are required.
+# 1. Install all base dependencies, including those for xvfb.
 RUN apt-get update && apt-get install -y --no-install-recommends \
     wget \
     ca-certificates \
@@ -12,12 +12,14 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     libxrender1 \
     xfonts-75dpi \
     xfonts-base \
+    xvfb \
+    xauth \
     && rm -rf /var/lib/apt/lists/*
 
-# 2. As requested, create a writable font cache directory.
+# 2. Create a writable font cache directory to prevent fontconfig warnings.
 RUN mkdir -p /var/cache/fontconfig && chmod 777 /var/cache/fontconfig
 
-# 3. Download and install the legacy dependencies.
+# 3. Download and install the required legacy dependencies.
 RUN set -ex; \
     wget http://archive.debian.org/debian/pool/main/libj/libjpeg-turbo/libjpeg62-turbo_1.5.2-2+deb10u1_amd64.deb && \
     wget http://security.debian.org/debian-security/pool/updates/main/o/openssl/libssl1.1_1.1.1w-0+deb11u4_amd64.deb && \