From 9b7ade65685002d5a50ddec4d0c6d2c4dc29c208 Mon Sep 17 00:00:00 2001
From: Michael Walker <mike@barrucadu.co.uk>
Date: Thu, 12 Nov 2020 22:20:17 +0000
Subject: [PATCH] Install file-dev in Dockerfile build stage

This is required by the majic, added in #2534.
---
 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 82bd8519c..b1b5171af 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ COPY . .
 
 ENV MIX_ENV=prod
 
-RUN apk add git gcc g++ musl-dev make cmake &&\
+RUN apk add git gcc g++ musl-dev make cmake file-dev &&\
 	echo "import Mix.Config" > config/prod.secret.exs &&\
 	mix local.hex --force &&\
 	mix local.rebar --force &&\