From 2e93381de3c674d548c2852ec91151cee465d6d1 Mon Sep 17 00:00:00 2001
From: Aditya Ramani <a_ramani@apple.com>
Date: Sun, 9 Nov 2025 20:54:59 -0800
Subject: [PATCH] Pull initfs from repository when running ctr-example (#391)

Use the initial filesystem image from a remote repository when brining
up the ctr-example
---
 examples/ctr-example/Makefile                       | 6 +-----
 examples/ctr-example/README.md                      | 1 +
 examples/ctr-example/Sources/ctr-example/main.swift | 4 +++-
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/examples/ctr-example/Makefile b/examples/ctr-example/Makefile
index 2a1ea5fb..f79f220b 100644
--- a/examples/ctr-example/Makefile
+++ b/examples/ctr-example/Makefile
@@ -18,7 +18,7 @@ SWIFT = /usr/bin/swift
 
 .PHONY: all build clean run
 
-all: containerization run
+all: run
 
 build:
 	$(SWIFT) build --configuration release
@@ -39,10 +39,6 @@ debug:
 
 fmt:
 	$(SWIFT) format --in-place --recursive Sources/
-
-containerization: 
-	$(MAKE) -C ../.. all
-
 fetch-default-kernel:
 	$(MAKE) -C ../.. fetch-default-kernel
 	cp -L ../../.local/vmlinux ./vmlinux
diff --git a/examples/ctr-example/README.md b/examples/ctr-example/README.md
index 44df1e11..05873bca 100644
--- a/examples/ctr-example/README.md
+++ b/examples/ctr-example/README.md
@@ -24,6 +24,7 @@ After the build completes, the example will run. In your terminal you should see
 
 ```
 Starting container example...
+Fetching container initial filesystem...
 Creating container from docker.io/library/alpine:3.16...
 Starting container...
 / #
diff --git a/examples/ctr-example/Sources/ctr-example/main.swift b/examples/ctr-example/Sources/ctr-example/main.swift
index a32935f4..cf8df300 100644
--- a/examples/ctr-example/Sources/ctr-example/main.swift
+++ b/examples/ctr-example/Sources/ctr-example/main.swift
@@ -28,10 +28,12 @@ struct CtrExample {
         try current.setraw()
         defer { current.tryReset() }
 
+        let initfsReference = "ghcr.io/apple/containerization/vminit:0.13.0"
+        print("Fetching base container filesystem...")
         // Create container manager with file-based initfs
         var manager = try await ContainerManager(
             kernel: Kernel(path: URL(fileURLWithPath: "./vmlinux"), platform: .linuxArm),
-            initfsReference: "vminit:latest",
+            initfsReference: initfsReference,
             network: try ContainerManager.VmnetNetwork()
         )