Merge pull request #5400 from dokku/dependabot/docker/tests/apps/dockerfile-procfile/node-18-alpine

chore(deps): bump node from 4-alpine to 18-alpine in /tests/apps/dockerfile-procfile

tests/apps/dockerfile-procfile/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:4-alpine
+FROM node:18-alpine
 
 RUN apk add --no-cache bash
 

tests/unit/app-json-2.bats

@@ -27,7 +27,7 @@ teardown() {
   echo "output: $output"
   echo "status: $status"
   assert_success
-  assert_output 'null'
+  assert_output '["docker-entrypoint.sh"]'
 }
 
 @test "(app-json) app.json dockerfile release" {