Log before building or pushing.

Previously there would be a make "entering directory" hint in the logs, but
with the switch to `linuxkit pkg` that no longer occurs.

Signed-off-by: Ian Campbell <ijc@docker.com>

src/cmd/linuxkit/pkg_build.go

@@ -27,6 +27,8 @@ func pkgBuild(args []string) {
 		os.Exit(1)
 	}
 
+	fmt.Printf("Building %q\n", p.Tag())
+
 	var opts []pkglib.BuildOpt
 	if *force {
 		opts = append(opts, pkglib.WithBuildForce())

src/cmd/linuxkit/pkg_push.go

@@ -27,6 +27,8 @@ func pkgPush(args []string) {
 		os.Exit(1)
 	}
 
+	fmt.Printf("Building and pushing %q\n", p.Tag())
+
 	var opts []pkglib.BuildOpt
 	opts = append(opts, pkglib.WithBuildPush())
 	if *force {