diff --git a/bin/setup b/bin/setup
index 52bb4a739..b1af0dc4c 100755
--- a/bin/setup
+++ b/bin/setup
@@ -6,9 +6,9 @@ puts "== Installing dependencies =="
 system("gem install bundler --conservative")
 system("bundle check") || system!("bundle install")
 
-puts "\n== Starting MySQL =="
-system "[ -d ~/Work/basecamp/docker-dev ] && git -C ~/Work/basecamp/docker-dev pull || gh repo clone basecamp/docker-dev ~/Work/basecamp/docker-dev"
-system! "~/Work/basecamp/docker-dev/setup mysql80"
+if ENV.fetch("SAAS_EXTENSION", "") != ""
+  load File.expand_path("../gems/fizzy-saas/bin/setup", __dir__)
+end
 
 puts "\n== Preparing database =="
 if ARGV.include?("--reset")
diff --git a/gems/fizzy-saas/bin/setup b/gems/fizzy-saas/bin/setup
new file mode 100755
index 000000000..ad1b6f9bd
--- /dev/null
+++ b/gems/fizzy-saas/bin/setup
@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+
+def system!(*args) system(*args, exception: true) end
+
+puts "\n== Starting MySQL =="
+system "[ -d ~/Work/basecamp/docker-dev ] && git -C ~/Work/basecamp/docker-dev pull || gh repo clone basecamp/docker-dev ~/Work/basecamp/docker-dev"
+system! "~/Work/basecamp/docker-dev/setup mysql80"