Follow-up cleanup of GitHub Actions migration

**Motivation:**

Make use of more common GitHub Actions migration workflows and
repository style changes.

**Modifications:**

* Unit tests workflows make use of the NIO `unit-tests` workflow with
  additional checks enabled
* Introduce `main.yml` which runs workflows on each commit to `main` and
  periodically to catch any regressions in merges or from upstream.
* Enable nightly CI runs as a signal for upcoming failures as is done in
  other Swift on Server ecosystem repositories.
* Remove the docker files which are no longer used and contained
  outdated pipelines.
* Bring the Samples up to Swift 5.9 and add a CI pipeline to ensure
  their continued ability to compile.

**Result:**

More in common with other GitHub Actions adoptions, compiling Samples.

Author: rnro

.github/workflows/main.yml

@@ -0,0 +1,25 @@
+name: Main
+
+on:
+  push:
+    branches: [main]
+  schedule:
+    - cron: "0 8,20 * * *"
+
+jobs:
+  unit-tests:
+    name: Unit tests
+    uses: apple/swift-nio/.github/workflows/unit_tests.yml@main
+    with:
+      linux_5_9_arguments_override: "--explicit-target-dependency-import-check error"
+      linux_5_10_arguments_override: "--explicit-target-dependency-import-check error"
+      linux_6_0_arguments_override: "--explicit-target-dependency-import-check error -Xswiftc -require-explicit-sendable"
+      linux_nightly_6_0_arguments_override: "--explicit-target-dependency-import-check error -Xswiftc -require-explicit-sendable"
+      linux_nightly_main_arguments_override: "--explicit-target-dependency-import-check error -Xswiftc -require-explicit-sendable"
+
+  samples:
+    name: Samples
+    uses: apple/swift-nio/.github/workflows/swift_matrix.yml@main
+    with:
+      name: "Samples"
+      matrix_linux_command: "cd Samples/ && swift build --explicit-target-dependency-import-check error"

.github/workflows/pull_request.yml

@@ -14,16 +14,17 @@ jobs:
 
   unit-tests:
     name: Unit tests
+    uses: apple/swift-nio/.github/workflows/unit_tests.yml@main
+    with:
+      linux_5_9_arguments_override: "--explicit-target-dependency-import-check error"
+      linux_5_10_arguments_override: "--explicit-target-dependency-import-check error"
+      linux_6_0_arguments_override: "--explicit-target-dependency-import-check error -Xswiftc -require-explicit-sendable"
+      linux_nightly_6_0_arguments_override: "--explicit-target-dependency-import-check error -Xswiftc -require-explicit-sendable"
+      linux_nightly_main_arguments_override: "--explicit-target-dependency-import-check error -Xswiftc -require-explicit-sendable"
+
+  samples:
+    name: Samples
     uses: apple/swift-nio/.github/workflows/swift_matrix.yml@main
     with:
-      name: "Unit tests"
-      matrix_linux_command: "swift test"
-      matrix_linux_5_9_enabled: false
-      matrix_linux_5_10_enabled: true
-      matrix_linux_6_0_enabled: true
-      matrix_linux_6_0_command_override: "swift test"
-      matrix_linux_nightly_6_0_enabled: true
-      matrix_linux_nightly_main_enabled: true
-      matrix_windows_6_0_enabled: false
-      matrix_windows_nightly_6_0_enabled: false
-      matrix_windows_nightly_main_enabled: false
+      name: "Samples"
+      matrix_linux_command: "cd Samples/ && swift build --explicit-target-dependency-import-check error"

CONTRIBUTING.md

@@ -70,8 +70,7 @@ We require that your commit messages match our template. The easiest way to do t
 
 ### Run CI checks locally
 
-You can run the Github Actions workflows locally using
-[act](https://github.com/nektos/act). For detailed steps on how to do this please see [https://github.com/swiftlang/github-workflows?tab=readme-ov-file#running-workflows-locally](https://github.com/swiftlang/github-workflows?tab=readme-ov-file#running-workflows-locally).
+You can run the GitHub Actions workflows locally using [act](https://github.com/nektos/act). For detailed steps on how to do this please see [https://github.com/swiftlang/github-workflows?tab=readme-ov-file#running-workflows-locally](https://github.com/swiftlang/github-workflows?tab=readme-ov-file#running-workflows-locally).
 
 ## How to contribute your work
 

Samples/Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.0
+// swift-tools-version:5.9
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
@@ -7,11 +7,11 @@ var targets: [PackageDescription.Target] = [
     .target(
         name: "SWIMNIOSampleCluster",
         dependencies: [
-            "SWIM",
-            "SWIMNIOExample",
-            "SwiftPrometheus",
-            "Lifecycle",
-            "ArgumentParser",
+            .product(name: "SWIM", package: "swift-cluster-membership"),
+            .product(name: "SWIMNIOExample", package: "swift-cluster-membership"),
+            .product(name: "SwiftPrometheus", package: "SwiftPrometheus"),
+            .product(name: "Lifecycle",package: "swift-service-lifecycle"),
+            .product(name: "ArgumentParser", package: "swift-argument-parser"),
         ],
         path: "Sources/SWIMNIOSampleCluster"
     ),
@@ -22,7 +22,7 @@ var targets: [PackageDescription.Target] = [
     .testTarget(
         name: "NoopTests",
         dependencies: [
-            "SWIM"
+            .product(name: "SWIM", package: "swift-cluster-membership"),
         ],
         path: "Tests/NoopTests"
     ),
@@ -42,7 +42,7 @@ var dependencies: [Package.Dependency] = [
 let package = Package(
     name: "swift-cluster-membership-samples",
     platforms: [
-        .macOS(.v10_12)
+        .macOS(.v13)
     ],
     products: [
         .executable(

Samples/Sources/SWIMNIOSampleCluster/SWIMNIOSampleNode.swift

@@ -55,7 +55,7 @@ struct SampleSWIMNIONode {
 }
 
 final class SWIMNIOSampleHandler: ChannelInboundHandler {
-    public typealias InboundIn = SWIM.MemberStatusChangedEvent
+    typealias InboundIn = SWIM.MemberStatusChangedEvent<SWIM.NIOPeer>
 
     let log = Logger(label: "SWIMNIOSample")