diff --git a/src/ubuntu-example/docker-compose.yaml b/src/ubuntu-example/docker-compose.yaml
index 10d7ecab..e31521ba 100644
--- a/src/ubuntu-example/docker-compose.yaml
+++ b/src/ubuntu-example/docker-compose.yaml
@@ -3,7 +3,7 @@ services:
     # The container name must be "application-server"
     container_name: "application-server"
     # This can be either a pre-existing image or built from a Dockerfile
-    image: "mcr.microsoft.com/devcontainers/base:ubuntu"
+    image: "mcr.microsoft.com/devcontainers/base:ubuntu-24.04"
     # build:
     #   context: .
     restart: always
diff --git a/startupscript/butane/probe-proxy-readiness.sh b/startupscript/butane/probe-proxy-readiness.sh
index d124a516..77ddff78 100644
--- a/startupscript/butane/probe-proxy-readiness.sh
+++ b/startupscript/butane/probe-proxy-readiness.sh
@@ -11,7 +11,7 @@ set -o xtrace
 # shellcheck source=/dev/null
 source /home/core/metadata-utils.sh
 
-APP_HEALTH="$(docker inspect --format='{{.State.Health.Status}}' application-server 2>/dev/null || echo "none")"
+APP_HEALTH="$( (docker inspect --format='{{.State.Health.Status}}' application-server 2>/dev/null || echo "none") | xargs)"
 
 if docker ps -q --filter "name=proxy-agent" | grep -q . \
     && docker ps -q --filter "name=application-server" | grep -q . \