wip: use a service container

Author: euanh

.github/workflows/pull_request.yml

@@ -26,14 +26,30 @@ jobs:
 
     integration-tests:
         name: Integration tests
-        uses: apple/swift-nio/.github/workflows/swift_matrix.yml@main
-        with:
-            name: "Integration tests"
-            matrix_linux_command: "./scripts/run-integration-tests.sh"
-            matrix_linux_5_8_enabled: false
-            matrix_linux_5_9_enabled: false
-            matrix_linux_5_10_enabled: false
-            matrix_linux_nightly_main_enabled: false
+        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
 
     swift-6-language-mode:
         name: Swift 6 Language Mode