Use GitHub Actions

.github/workflows/tests.yml

@@ -0,0 +1,14 @@
+name: GitHub Actions CI
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Git repository
+        uses: actions/checkout@main
+
+      - run: shellcheck script/*

README.md

@@ -1,7 +1,5 @@
 # Scripts To Rule Them All
 
-[![Build Status](https://travis-ci.org/github/scripts-to-rule-them-all.svg?branch=master)](https://travis-ci.org/github/scripts-to-rule-them-all)
-
 This is a set of boilerplate scripts describing the [normalized script pattern
 that GitHub uses in its projects](http://githubengineering.com/scripts-to-rule-them-all/). While these
 patterns can work for projects based on any framework or language, these
@@ -63,7 +61,7 @@ state of the app into shape for the current version that is checked out.
 
 [`script/server`][server] is used to start the application.
 
-For a web application, this might start up any extra processes that the 
+For a web application, this might start up any extra processes that the
 application requires to run in addition to itself.
 
 [`script/update`][update] should be called ahead of any application booting to ensure that

script/bootstrap

@@ -17,7 +17,7 @@ fi
 if [ -f ".ruby-version" ] && [ -z "$(rbenv version-name 2>/dev/null)" ]; then
   echo "==> Installing Ruby…"
   rbenv install --skip-existing
-  which bundle >/dev/null 2>&1  || {
+  command -v bundle >/dev/null 2>&1  || {
     gem install bundler
     rbenv rehash
   }