Issue #1631: fix(scripts/buildinputs/) validate TARGETPLATFORM environment variable (#1634)

Author: jiridanek

scripts/buildinputs/buildinputs.go

@@ -9,15 +9,18 @@ import (
 
 func main() {
 	targetPlatform := os.Getenv("TARGETPLATFORM")
+	if targetPlatform == "" {
+		panic("TARGETPLATFORM environment variable is required")
+	}
 	platformFields := strings.Split(targetPlatform, "/")
 	if len(platformFields) != 2 {
-		panic(fmt.Sprint(targetPlatform, "format is invalid, should be os/arch"))
+		panic(fmt.Sprintf("TARGETPLATFORM format is invalid: %q, should be os/arch", targetPlatform))
 	}
 	targetOs := platformFields[0]
 	targetArch := platformFields[1]
 
 	if targetOs != "linux" {
-		panic(fmt.Sprint(targetOs, "not supported"))
+		panic(fmt.Sprintf("%s not supported", targetOs))
 	}
 
 	flag.Parse()