From 38f4390147e92ff9b94a7b58310721fef1618219 Mon Sep 17 00:00:00 2001
From: Frank Elsinga <frank@elsinga.de>
Date: Sat, 8 Nov 2025 00:03:03 +0100
Subject: [PATCH] Add Xvfb support to the dockerfile

This enables headless browser testing including WebGL support. firefox --headless does not support rendering WebGL without such a virtual display
---
 Dockerfile           | 9 +++++++++
 docker/entrypoint.sh | 9 +++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 docker/entrypoint.sh

diff --git a/Dockerfile b/Dockerfile
index a50425b21..b3f517142 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,6 +30,9 @@ RUN apt-get update \
     osmosis \
     ca-certificates \
     firefox-esr \
+    xvfb \
+    mesa-utils \
+    libgl1-mesa-dri \
   && apt-get clean \
   && rm -rf /var/lib/apt/lists/* # Replace with `apt-get dist-clean` after upgrading to Debian 13 (Trixie)
 
@@ -50,3 +53,9 @@ RUN bundle install
 COPY package.json yarn.lock /app/
 COPY bin/yarn /app/bin/
 RUN bundle exec bin/yarn install
+
+# Copy and set entrypoint
+COPY docker/entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
new file mode 100644
index 000000000..df6a77cd6
--- /dev/null
+++ b/docker/entrypoint.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+set -e
+
+# Start Xvfb in the background for headless browser testing
+export DISPLAY=:99.0
+Xvfb $DISPLAY -screen 0 1024x768x24 &
+
+# main command
+exec "$@"
-- 
2.39.5