Update ci.yml

Author: o2sh

.github/workflows/ci.yml

@@ -4,10 +4,24 @@ on: [push]
 
 jobs:
   build:
-    runs-on: ${{ matrix.operating-system }}
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        operating-system: [ubuntu-latest, windows-latest]
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+        rust: [stable, nightly]
+        include:
+          - os: macOS-latest
+            rust: 'stable'
+            components: 'rustfmt, clippy'
+            targets: 'x86_64-apple-darwin'
+          - os: windows-latest
+            rust: 'stable'
+            components: 'rustfmt, clippy'
+            targets: 'x86_64-pc-windows-msvc'
+          - os: ubuntu-latest
+            rust: 'stable'
+            components: 'rustfmt, clippy'
+            targets: 'x86_64-unknown-linux-musl'
 
     steps:
     - uses: actions/checkout@v1