github: setup some basic GH actions

This should mirror what we do with Travis CI.

Signed-off-by: Paul Moore <paul@paul-moore.com>

.github/actions/setup/action.yaml

@@ -0,0 +1,31 @@
+#
+# Github Action to setup the audit-testsuite
+#
+# Copyright (c) 2021 Microsoft Corporation <paulmoore@microsoft.com>
+# Author: Paul Moore <paul@paul-moore.com>
+#
+
+name: Setup the audit-testsuite
+description: "Install CI dependencies for the audit-testsuite"
+runs:
+  using: "composite"
+  steps:
+  - run: sudo apt-get install -y build-essential gcc-multilib python3-pip
+    shell: bash
+  - run: sudo apt-get install -y astyle
+    shell: bash
+  - run: |
+      # NOTE: the distro package isn't current enough (ubuntu-20.04)
+      git clone https://github.com/perltidy/perltidy.git perltidy
+      cd perltidy
+      perl Makefile.PL
+      make
+      sudo make install
+      echo "/usr/local/bin" >> $GITHUB_PATH
+    shell: bash
+  - run: |
+      # NOTE: the distro package isn't current enough (ubuntu-20.04)
+      sudo python3 -m pip install --upgrade pip
+      sudo python3 -m pip install yapf
+      echo "$HOME/.local/bin" >> $GITHUB_PATH
+    shell: bash

.github/workflows/continuous-integration.yml

@@ -0,0 +1,31 @@
+#
+# Github CI Action for the audit-testsuite
+#
+# Copyright (c) 2021 Microsoft Corporation <paulmoore@microsoft.com>
+# Author: Paul Moore <paul@paul-moore.com>
+#
+
+name: Continuous Integration
+on: ["push", "pull_request"]
+
+jobs:
+  syntax:
+    name: Check Syntax
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Checkout from GitHub
+      uses: actions/checkout@v2
+    - name: Setup
+      uses: ./.github/actions/setup
+    - name: Syntax Checker
+      run: ./tools/check-syntax -f && git diff --exit-code
+  build:
+    name: Build Tests
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Checkout from GitHub
+      uses: actions/checkout@v2
+    - name: Setup
+      uses: ./.github/actions/setup
+    - name: Build
+      run: make

README.md

@@ -2,7 +2,7 @@ Basic Audit Regression Test Suite for the Linux Kernel
 ===============================================================================
 https://github.com/linux-audit/audit-testsuite
 
-[![Build Status](https://img.shields.io/travis/linux-audit/audit-testsuite/master.svg)](https://travis-ci.org/linux-audit/audit-testsuite)
+[![Build Status](https://github.com/linux-audit/audit-testsuite/workflows/Continuous%20Integration/badge.svg?branch=main)](https://github.com/linux-audit/audit-testsuite/actions)
 
 The audit-testsuite project provides a simple, self-contained regression test
 suite for the Linux Kernel's audit subsystem.