Merge pull request #9 from mikemccracken/2024.04.01/main/build-focal-too

build: release on focal and jammy

.github/workflows/build.yaml

@@ -4,8 +4,11 @@ on:
 name: build
 jobs:
   build:
+    strategy:
+      matrix:
+        os: [ubuntu-20.04, ubuntu-22.04]
     name: build
-    runs-on: ubuntu-22.04
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
       - name: Set up golang
@@ -62,6 +65,7 @@ jobs:
           go get -v ./...
           make
           cp atomfs ~/bin
+          cp atomfs atomfs-${{ matrix.os }}
       - name: test
         run: |
           export PATH=~/bin:$PATH
@@ -79,4 +83,4 @@ jobs:
         if: startsWith(github.ref, 'refs/tags/')
         with:
           files: |
-            atomfs
+            atomfs-${{ matrix.os }}