From 327787273f21c263a7fe8fed6d53d21ea33f55c1 Mon Sep 17 00:00:00 2001
From: Yuri Astrakhan <yuriastrakhan@gmail.com>
Date: Sat, 25 Mar 2023 14:20:39 -0400
Subject: [PATCH] Use cargo sparse index in docker (#614)

Make docker builds much faster with the latest sparse cargo registry
setting

Note that we can revert this PR after the rust 1.70 is out, as i heard
it will become the default
---
 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 830add03..e817a0b8 100755
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ RUN apk add --no-cache openssl-dev musl-dev perl build-base
 
 WORKDIR /usr/src/martin
 ADD . .
-RUN cargo build --release --features=vendored-openssl
+RUN CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse cargo build --release --features=vendored-openssl
 
 
 FROM alpine:latest