wip: add scheduled job

Author: euanh

.github/workflows/main.yml

@@ -0,0 +1,63 @@
+name: main
+
+on:
+    push:
+        branches:
+            - main
+    schedule:
+        - cron: '15 10 * * *'
+
+jobs:
+    soundness:
+        name: Soundness
+        uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
+        with:
+            api_breakage_check_container_image: "swift:6.0-noble"
+            docs_check_container_image: "swift:6.0-noble"
+            license_header_check_project_name: "SwiftContainerPlugin"
+            shell_check_container_image: "swift:6.0-noble"
+
+    unit-tests:
+        name: Unit tests
+        uses: apple/swift-nio/.github/workflows/unit_tests.yml@main
+        with:
+            linux_5_9_enabled: false
+            linux_5_10_enabled: false
+            linux_6_0_arguments_override: "--skip SmokeTests"
+            linux_nightly_6_0_arguments_override: "--skip SmokeTests"
+            linux_nightly_main_arguments_override: "--skip SmokeTests"
+
+    integration-tests:
+        name: Integration tests
+        runs-on: ubuntu-latest
+        services:
+            registry:
+                image: registry:2
+                ports:
+                    - 5000:5000
+        container:
+            image: swift:6.0-noble
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v4
+              with:
+                  persist-credentials: false
+
+            - name: Mark the workspace as safe
+              # https://github.com/actions/checkout/issues/766
+              run: git config --global --add safe.directory ${GITHUB_WORKSPACE}
+
+            - name: Run test job
+              env:
+                  REGISTRY_HOST: registry
+                  REGISTRY_PORT: 5000
+              run: |
+                  swift test
+
+    endtoend-tests:
+        name: End to end tests
+        uses: ./.github/workflows/endtoend_tests.yml
+
+    swift-6-language-mode:
+        name: Swift 6 Language Mode
+        uses: apple/swift-nio/.github/workflows/swift_6_language_mode.yml@main