From 8d64cb6954372fe29373cb98a3d7c482292d5daf Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Sun, 22 Dec 2019 09:26:29 -0800
Subject: [PATCH] Use alpine 3.10 in building linux binary.

For some reason the bulid fails with alpine 3.11,
with a linker error finding -lz.  See #6003.
It would be good to figure out how to make it work
with alpine 3.11.
---
 linux/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/linux/Dockerfile b/linux/Dockerfile
index a669891ac..ca48d07f8 100644
--- a/linux/Dockerfile
+++ b/linux/Dockerfile
@@ -1,5 +1,5 @@
 # USE ALPINE LINUX
-FROM alpine
+FROM alpine:3.10
 RUN apk update
 RUN apk add alpine-sdk git ca-certificates ghc gmp-dev zlib-dev bash dpkg fakeroot cabal
 RUN mkdir -p /usr/src/