try to fix mac tests with build before testcontainer start and macos-14 (#569)

* try to fix mac tests with build before testcontainer start and macos-14

* try macos-13

* add colima

* try macos-12

Author: jamesward

.github/workflows/gradle.yml

@@ -9,7 +9,7 @@ jobs:
   gradle:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-12]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
@@ -23,7 +23,7 @@ jobs:
     - uses: gradle/gradle-build-action@v3
 
     - name: Test on Mac
-      if: matrix.os == 'macos-latest'
+      if: matrix.os == 'macos-12'
       run: |
         brew install docker
         colima start --network-address

integration_testing/src/test/kotlin/io/grpc/kotlin/ExamplesTest.kt

@@ -71,6 +71,12 @@ class ExamplesTest {
 
         assertTrue(dependencyResult.output.contains("io.grpc:grpc-kotlin-stub:$grpcKotlinVersion"))
 
+        GradleRunner.create()
+            .withProjectDir(tempDir.toFile())
+            .withArguments(":client:build")
+            .withGradleDistribution(distributionUrl)
+            .build()
+
         GradleRunner.create()
             .withProjectDir(tempDir.toFile())
             .withArguments(":server:jibDockerBuild", "--image=grpc-kotlin-examples-server")