From 463164daf8beddf88b880cec0dfb0db7bb8ba7aa Mon Sep 17 00:00:00 2001
From: "David J. Malan" <malan@harvard.edu>
Date: Sat, 5 Oct 2024 18:51:21 -0400
Subject: [PATCH] parameterized Ubuntu version

---
 Dockerfile | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 179de99..6cc5f54 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,8 @@
+# Ubuntu version
+ARG RELEASE=24.04
+
 # Build stage
-FROM ubuntu:24.04 as builder
+FROM ubuntu:${RELEASE} as builder
 
 
 # Build-time variables
@@ -126,7 +129,7 @@ RUN cd /tmp && \
 
 
 # Final stage
-FROM ubuntu:24.04
+FROM ubuntu:${RELEASE}
 LABEL maintainer="sysadmins@cs50.harvard.edu"
 ARG DEBIAN_FRONTEND=noninteractive