From b643595f97209e0e67f0cf62e13d4fb6c609451b Mon Sep 17 00:00:00 2001
From: Joseph Ferguson <yosifkit@gmail.com>
Date: Fri, 15 Sep 2023 16:57:07 -0700
Subject: [PATCH] Set `GOTOOLCHAIN` to prevent go auto-upgrade

---
 1.21/alpine3.17/Dockerfile | 4 ++++
 1.21/alpine3.18/Dockerfile | 4 ++++
 1.21/bookworm/Dockerfile   | 4 ++++
 1.21/bullseye/Dockerfile   | 4 ++++
 Dockerfile-linux.template  | 6 ++++++
 5 files changed, 22 insertions(+)

diff --git a/1.21/alpine3.17/Dockerfile b/1.21/alpine3.17/Dockerfile
index 2db04201..1af06fb3 100644
--- a/1.21/alpine3.17/Dockerfile
+++ b/1.21/alpine3.17/Dockerfile
@@ -118,6 +118,10 @@ RUN set -eux; \
 	\
 	go version
 
+# don't auto-upgrade the gotoolchain
+# https://github.com/docker-library/golang/issues/472
+ENV GOTOOLCHAIN=local
+
 ENV GOPATH /go
 ENV PATH $GOPATH/bin:$PATH
 RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 1777 "$GOPATH"
diff --git a/1.21/alpine3.18/Dockerfile b/1.21/alpine3.18/Dockerfile
index 37eaad79..3a4479ca 100644
--- a/1.21/alpine3.18/Dockerfile
+++ b/1.21/alpine3.18/Dockerfile
@@ -118,6 +118,10 @@ RUN set -eux; \
 	\
 	go version
 
+# don't auto-upgrade the gotoolchain
+# https://github.com/docker-library/golang/issues/472
+ENV GOTOOLCHAIN=local
+
 ENV GOPATH /go
 ENV PATH $GOPATH/bin:$PATH
 RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 1777 "$GOPATH"
diff --git a/1.21/bookworm/Dockerfile b/1.21/bookworm/Dockerfile
index 1cb6b057..2603d3fb 100644
--- a/1.21/bookworm/Dockerfile
+++ b/1.21/bookworm/Dockerfile
@@ -124,6 +124,10 @@ RUN set -eux; \
 	\
 	go version
 
+# don't auto-upgrade the gotoolchain
+# https://github.com/docker-library/golang/issues/472
+ENV GOTOOLCHAIN=local
+
 ENV GOPATH /go
 ENV PATH $GOPATH/bin:$PATH
 RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 1777 "$GOPATH"
diff --git a/1.21/bullseye/Dockerfile b/1.21/bullseye/Dockerfile
index fb43eb8d..cc549c6e 100644
--- a/1.21/bullseye/Dockerfile
+++ b/1.21/bullseye/Dockerfile
@@ -130,6 +130,10 @@ RUN set -eux; \
 	\
 	go version
 
+# don't auto-upgrade the gotoolchain
+# https://github.com/docker-library/golang/issues/472
+ENV GOTOOLCHAIN=local
+
 ENV GOPATH /go
 ENV PATH $GOPATH/bin:$PATH
 RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 1777 "$GOPATH"
diff --git a/Dockerfile-linux.template b/Dockerfile-linux.template
index 3687bef6..1f207db5 100644
--- a/Dockerfile-linux.template
+++ b/Dockerfile-linux.template
@@ -201,6 +201,12 @@ RUN set -eux; \
 {{ ) else "" end -}}
 	go version
 
+{{ if [ "1.20" ] | index(env.version | rtrimstr("-rc")) then "" else ( -}}
+# don't auto-upgrade the gotoolchain
+# https://github.com/docker-library/golang/issues/472
+ENV GOTOOLCHAIN=local
+
+{{ ) end -}}
 ENV GOPATH /go
 ENV PATH $GOPATH/bin:$PATH
 RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 1777 "$GOPATH"