Try a few times more

common-app/overlay/etc/sunet-machine-healthy/health-checks.d/app.check

@@ -3,4 +3,11 @@
 set -e
 set -o pipefail
 
-curl -k https://localhost:443 | jq
+
+while true; do
+    if curl -k https://localhost:443 | jq ; then
+        exit 0
+    fi
+
+    sleep 3
+done