set umask when setting up container rootfs

So that we can truly create files and directories in any mode.

Signed-off-by: Peng Tao <bergwolf@gmail.com>

src/container.c

@@ -512,6 +512,9 @@ static int hyper_setup_container_rootfs(void *data)
 		goto fail;
 	}
 
+	/* To create files/directories accessible for all users. */
+	umask(0);
+
 	if (hyper_rescan_scsi() < 0) {
 		fprintf(stdout, "rescan scsi failed\n");
 		goto fail;