Updated GitHub CI

Author: colemancda

.github/workflows/swift.yml

@@ -3,66 +3,48 @@ name: Swift
 on: [push]
 
 jobs:
+  mac:
+    name: macOS
+    strategy:
+      matrix:
+        swift: [5.6.3, 5.7]
+        os: [macos-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Install Swift
+      uses: slashmo/[email protected]
+      with:
+        version: ${{ matrix.swift }}
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Swift Version
+      run: swift --version
+    - name: Build (Debug)
+      run: swift build -c debug
+    - name: Build (Release)
+      run: swift build -c release
+    - name: Test (Debug)
+      run: swift test --configuration debug
 
-    macOS-swift:
-        name: macOS
-        runs-on: macOS-latest
-        steps:
-        - name: Checkout
-          uses: actions/checkout@v2
-        - name: Xcode Version
-          run: |
-            xcodebuild -version
-        - name: Swift Version
-          run: swift --version
-        - name: Build (Debug)
-          run: swift build -c debug
-        - name: Build (Release)
-          run: swift build -c release
-        - name: Test (Debug)
-          run: swift test --configuration debug
-        - name: Test (Release)
-          run: swift test --configuration release -Xswiftc -enable-testing
-
-    linux-swift:
-        name: Linux (Swift 5.6.1)
-        runs-on: ubuntu-20.04
-        container: swift:5.6.1-focal
-        steps:
-        - name: Checkout
-          uses: actions/checkout@v2
-        - name: Swift Version
-          run: swift --version
-        - name: Build (Debug)
-          run: swift build -c debug
-        - name: Build (Release)
-          run: swift build -c release
-        - name: Test (Debug)
-          run: swift test --configuration debug --enable-code-coverage
-        - name: Test (Release)
-          run: swift test --configuration release -Xswiftc -enable-testing --enable-code-coverage
-        - name: Archive Build artifacts
-          uses: actions/upload-artifact@v3
-          with:
-            name: swiftpm-build-ubuntu-x86_64
-            path: .build/*/*.xctest
-        - name: Coverage Report
-          uses: maxep/[email protected]
-    
-    linux-swift-5_5:
-        name: Linux (Swift 5.5.3)
-        runs-on: ubuntu-20.04
-        container: swift:5.5.3-focal
-        steps:
-        - name: Checkout
-          uses: actions/checkout@v2
-        - name: Swift Version
-          run: swift --version
-        - name: Build (Debug)
-          run: swift build -c debug
-        - name: Build (Release)
-          run: swift build -c release
-        - name: Test (Debug)
-          run: swift test --configuration debug
-        - name: Test (Release)
-          run: swift test --configuration release -Xswiftc -enable-testing
+  linux:
+    name: Linux
+    strategy:
+      matrix:
+        swift: [5.1.5, 5.5, 5.6.3, 5.7]
+        os: [ubuntu-20.04]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Install Swift
+      uses: slashmo/[email protected]
+      with:
+        version: ${{ matrix.swift }}
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Swift Version
+      run: swift --version
+    - name: Build (Debug)
+      run: swift build -c debug
+    - name: Build (Release)
+      run: swift build -c release
+    - name: Test (Debug)
+      run: swift test --configuration debug