Set GOTOOLCHAIN to prevent go auto-upgrade

docker-library · Sep 15, 2023 · b643595 · b643595
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diff --git a/1.21/alpine3.17/Dockerfile b/1.21/alpine3.17/Dockerfile
diff --git a/1.21/alpine3.18/Dockerfile b/1.21/alpine3.18/Dockerfile
diff --git a/1.21/bookworm/Dockerfile b/1.21/bookworm/Dockerfile
diff --git a/1.21/bullseye/Dockerfile b/1.21/bullseye/Dockerfile
diff --git 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"