From 9a79d2130bae94eb4e4d57498de0c49327e04a72 Mon Sep 17 00:00:00 2001
From: Kai Kriegel <kai@kjkriegel.de>
Date: Fri, 17 Sep 2021 00:07:00 +0000
Subject: [PATCH] Update Dockerfile

---
 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 8f979b3..4392b08 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM mono:slim
 
 RUN apt-get update -y && apt-get upgrade -y
-RUN apt-get install -y mono-complete gtk-sharp2 nuget capnproto git ruby
+RUN apt-get install -y mono-complete gtk-sharp2 nuget capnproto git ruby ruby-dev
 RUN gem install bundler