change local repositories, deleted tcp_base from single
diff --git a/linux/system/repo-local/ubuntu.yaml b/linux/system/repo-local/ubuntu.yaml
new file mode 100644
index 0000000..e683fa0
--- /dev/null
+++ b/linux/system/repo-local/ubuntu.yaml
@@ -0,0 +1,23 @@
+parameters:
+  linux:
+    system:
+      repo:
+        ubuntu:
+          refresh_db: ${_param:linux_repo_refresh_db}
+          source: "deb [arch=amd64] http://${_param:local_repo_url}/${_param:linux_distrib_codename} nightly main"
+          architectures: amd64
+          default: true
+          key_url: "http://${_param:local_repo_url}/public.gpg"
+        ubuntu-updates:
+          refresh_db: ${_param:linux_repo_refresh_db}
+          source: "deb [arch=amd64] http://${_param:local_repo_url}/${_param:linux_distrib_codename}-updates nightly main"
+          architectures: amd64
+          default: true
+          key_url: "http://${_param:local_repo_url}/public.gpg"
+        ubuntu-security:
+          refresh_db: ${_param:linux_repo_refresh_db}
+          source: "deb [arch=amd64] http://${_param:local_repo_url}/${_param:linux_distrib_codename}-security nightly main"
+          architectures: amd64
+          default: true
+          key_url: "http://${_param:local_repo_url}/public.gpg"
+