From ce196f9139077be3a6f23f8602a4ad30d0fbda5f Mon Sep 17 00:00:00 2001
From: hollydinkel <holly.dinkel@gmail.com>
Date: Sat, 18 Nov 2023 10:13:01 -0600
Subject: [PATCH] [CI] update CI with OS matrix

---
 .github/workflows/build.yml | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c05bc86..e788812 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,17 +5,14 @@ on:
     branches: [ 'master' ]
 
 jobs:
+  build-linux:
+    strategy:
+      max-parallel: 5
+      matrix:
+        os: [ubuntu-latest, ubuntu-22.04, ubuntu-20.04, ubuntu-18.04]
 
-  build-focal:
-    runs-on: ubuntu-20.04
-    steps:
-      - name: Checkout TrackDLO repository
-        uses: actions/checkout@v3
-      - name: Build, test, push base docker (Ubuntu 20.04)
-        run: cd docker && docker build -t rmdlo-trackdlo:noetic -f Dockerfile.noetic ..
+    runs-on: ${{matrix.os}}
 
-  build-jammy:
-    runs-on: ubuntu-22.04
     steps:
       - name: Checkout TrackDLO repository
         uses: actions/checkout@v3