diff --git a/docker/Dockerfile b/docker/Dockerfile
index 1783c088..ce1b6aa1 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,8 @@
-FROM ruby:3.2.2
+ARG ruby_version=3.2.2
+ARG base_image=ghcr.io/alphagov/govuk-ruby-base:$ruby_version
+ARG builder_image=ghcr.io/alphagov/govuk-ruby-builder:$ruby_version
+
+FROM $builder_image AS builder
 
 WORKDIR /srv/app/datagovuk_find