diff --git a/repro-build b/repro-build
new file mode 100755
index 0000000..8ff8976
--- /dev/null
+++ b/repro-build
@@ -0,0 +1,9 @@
+#!/bin/sh -xe
+apk add --quiet git go
+git clone --quiet file:///src repo
+cd repo
+go build .
+
+apk add --quiet file
+file downloader
+du -h downloader
diff --git a/repro-run.json b/repro-run.json
new file mode 100644
index 0000000..ab20866
--- /dev/null
+++ b/repro-run.json
@@ -0,0 +1 @@
+{ "Command": "/src/repro-build", "Cache": ["/home/repro/.cache/go-build"] }