From 1b36ec0101277ccf18ed57db5836ae6bfc53a4d5 Mon Sep 17 00:00:00 2001
From: Jocelyn Le Sage <jocelyn@le-sage.com>
Date: Fri, 3 Jun 2022 09:28:54 -0400
Subject: [PATCH] Build the membarrier checker using Alpine 3.14.

---
 Dockerfile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 4c9db0f..a34143c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@
 #
 
 # Build the membarrier check tool.
-FROM alpine:3.12
+FROM alpine:3.14 AS membarrier
 WORKDIR /tmp
 COPY membarrier_check.c .
 RUN apk --no-cache add build-base linux-headers
@@ -157,7 +157,7 @@ RUN \
 
 # Add files.
 COPY rootfs/ /
-COPY --from=0 /tmp/membarrier_check /usr/bin/
+COPY --from=membarrier /tmp/membarrier_check /usr/bin/
 
 # Set environment variables.
 ENV APP_NAME="Firefox"