From 8afa901272b0184df2f3d609ce2ceb1f9c435eca Mon Sep 17 00:00:00 2001
From: Ruben Fiszel <ruben@rubenfiszel.com>
Date: Wed, 6 Sep 2023 14:27:23 +0200
Subject: [PATCH] pre-warm go

---
 Dockerfile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Dockerfile b/Dockerfile
index f4d46a8f1f..a6c2b55def 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -164,6 +164,9 @@ RUN set -eux; \
 ENV PATH="${PATH}:/usr/local/go/bin"
 ENV GO_PATH=/usr/local/go/bin/go
 
+# go build is slower the first time it is ran, so we prewarm it in the build
+RUN mkdir -p /tmp/gobuildwarm && cd /tmp/gobuildwarm && go mod init gobuildwarm &&  printf "package foo\nimport (\"fmt\")\nfmt.Println(42)" > warm.go && go build -x && rm -rf /tmp/gobuildwarm
+
 ENV TZ=Etc/UTC
 
 RUN /usr/local/bin/python3 -m pip install pip-tools