commit da5671d46e4d182e367f8bd1344ab90c73f19406
author Andrew Bonventre <andybons@golang.org> Fri Aug 21 12:57:49 2020 -0400
committer Andrew Bonventre <andybons@golang.org> Fri Aug 21 18:56:21 2020 +0000
tree cd89b3a321c9eec55c051677bfa7529bd04d6784
parent e4ebab0fc1506ef88abb5dd5ba8680bf0891113f

[dev.go2go] Dockerfile: ensure Docker doesn’t use cache when cloning dev.go2go branch

Change-Id: I491f42e5d4998ff05ccbc85361b92a669a6ea300
Reviewed-on: https://go-review.googlesource.com/c/playground/+/249700
Reviewed-by: Alexander Rakoczy <alex@golang.org>

Dockerfile

diff --git a/Dockerfile b/Dockerfile
index b2162d4..77fb188 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -26,6 +26,8 @@
 
 # Compile Go at target sandbox version and install standard library with --tags=faketime.
 WORKDIR /usr/local
+# Don’t use the cached checkout if the HEAD commit is different.
+ADD https://api.github.com/repos/golang/playground/git/refs/heads/dev.go2go version.json
 RUN git clone https://go.googlesource.com/go go-faketime && cd go-faketime && git checkout dev.go2go
 WORKDIR /usr/local/go-faketime/src
 RUN ./make.bash