Fix cache directory err check+dockerfile

1 files changed, 5 insertions, 2 deletions

diff --git a/main.go b/main.go
index a76690e..5895b12 100644
--- a/main.go
+++ b/main.go
@@ -22,14 +22,17 @@ func main() {
 	log.Println(config)
 
 	// Some init
-	os.MkdirAll(config.S3Cache, 0755)
+	err := os.MkdirAll(config.S3Cache, 0755)
+	if err != nil {
+		log.Fatalf("init failed: mkdir s3 cache failed: ", err)
+	}
 
 	// Launch our submodules
 	done := make(chan error)
 	go httpServer(config, done)
 	go sshServer(config, done)
 
-	err := <-done
+	err = <-done
 	if err != nil {
 		log.Fatalf("A component failed: %v", err)
 	}