diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..7e891e83
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "infra/pxe-server"]
+	path = infra/pxe-server
+	url = https://github.com/khuedoan/pxe-server
diff --git a/infra/pxe-server b/infra/pxe-server
new file mode 160000
index 00000000..41da4a7e
--- /dev/null
+++ b/infra/pxe-server
@@ -0,0 +1 @@
+Subproject commit 41da4a7ea1856866d786585663eac188fd25df99