diff --git a/sdk_container/src/third_party/portage-stable/metadata/layout.conf b/sdk_container/src/third_party/portage-stable/metadata/layout.conf
new file mode 100644
index 0000000000..ec433728a8
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/metadata/layout.conf
@@ -0,0 +1 @@
+masters = gentoo portage-stable chromiumos
diff --git a/sdk_container/src/third_party/portage-stable/profiles/repo_name b/sdk_container/src/third_party/portage-stable/profiles/repo_name
new file mode 100644
index 0000000000..316c11ecc4
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/profiles/repo_name
@@ -0,0 +1 @@
+portage-stable