From aef1a7e4033be12b4aae36a725f4f1bc141f92a6 Mon Sep 17 00:00:00 2001
From: Ximon Eighteen <3304436+ximon18@users.noreply.github.com>
Date: Thu, 16 Sep 2021 15:11:44 +0200
Subject: [PATCH] Set CARGO_HTTP_MULTIPLEXING=false to work around 'cargo
 build' network failures when building the Docker image on CI environments.

---
 Dockerfile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 33550e1..d986dfd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,11 @@ RUN apk add rust cargo
 WORKDIR /tmp/routinator
 COPY . .
 
-RUN cargo build \
+# Force Cargo to use HTTP/1.1 without pipelining instead of HTTP/2 with
+# multiplexing. This seems to help with various "spurious network error"
+# warnings when Cargo attempts to fetch from crates.io when building this
+# image on Docker Hub and GitHub Actions build machines. 
+RUN CARGO_HTTP_MULTIPLEXING=false cargo build \
     --target x86_64-alpine-linux-musl \
     --release \
     --locked