From 579cc81e6fa0ab7673d4a2ef9cefe8bd2402a2d6 Mon Sep 17 00:00:00 2001
From: Alex Suraci <suraci.alex@gmail.com>
Date: Mon, 4 Jan 2021 16:21:20 -0500
Subject: [PATCH] only use /scratch if it exists

turns out we use this in the GitHub Actions too, which don't have
/scratch

Signed-off-by: Alex Suraci <suraci.alex@gmail.com>
---
 cmd/task/main.go | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/cmd/task/main.go b/cmd/task/main.go
index 1a0fd54..95a2264 100644
--- a/cmd/task/main.go
+++ b/cmd/task/main.go
@@ -29,9 +29,12 @@ func main() {
 		}
 	}
 
-	buildkitd, err := task.SpawnBuildkitd(req, &task.BuildkitdOpts{
-		RootDir: "/scratch/buildkitd",
-	})
+	var opts task.BuildkitdOpts
+	if _, err := os.Stat("/scratch"); err == nil {
+		opts.RootDir = "/scratch/buildkitd"
+	}
+
+	buildkitd, err := task.SpawnBuildkitd(req, &opts)
 	failIf("start buildkitd", err)
 
 	res, err := task.Build(buildkitd, wd, req)