diff --git a/.mobconf b/.mobconf
index 23b65de8e..9d412af91 100644
--- a/.mobconf
+++ b/.mobconf
@@ -1,4 +1,4 @@
 [image]
 target = builder-install
 repository = gcr.io/mobilenode-211420/
-Dockerfile-version = 1_14
+dockerfile = mobilecoin/docker/Dockerfile
diff --git a/rust-toolchain b/rust-toolchain
deleted file mode 100644
index 3a29ac5dd..000000000
--- a/rust-toolchain
+++ /dev/null
@@ -1 +0,0 @@
-nightly-2021-07-21
diff --git a/rust-toolchain b/rust-toolchain
new file mode 120000
index 000000000..0c20e75c5
--- /dev/null
+++ b/rust-toolchain
@@ -0,0 +1 @@
+mobilecoin/rust-toolchain
\ No newline at end of file