Harden hostname logic in VitessTestDb

GitOrigin-RevId: 808aef0139c7d8fb1d00188f6e2111668ecdee2c

Author: aparajon

Diff for: misk-vitess/build.gradle.kts

@@ -26,6 +26,7 @@ dependencies {
   testFixturesImplementation(project(":misk-docker"))
   testFixturesImplementation(project(":wisp:wisp-moshi"))
   testFixturesImplementation(project(":wisp:wisp-resource-loader"))
+  testFixturesImplementation(project(":wisp:wisp-containers-testing"))
 
   testImplementation(libs.mysqlConnector)
   testImplementation(libs.junitApi)

Diff for: misk-vitess/src/testFixtures/kotlin/misk/vitess/testing/internal/VitessClusterConfig.kt

@@ -1,11 +1,13 @@
 package misk.vitess.testing.internal
 
+import wisp.containers.ContainerUtil
+
 class VitessClusterConfig(port: Int) {
   val vtgatePort: Int = port
   val mysqlPort: Int = port - 1
   val grpcPort: Int = port - 2
   val basePort: Int = port - 3
-  val hostname: String = System.getenv("VITESS_HOST") ?: "localhost"
+  val hostname: String = System.getenv("VITESS_HOST") ?: ContainerUtil.dockerTargetOrLocalHost()
   val vtgateUser: String = "root"
   val vtgateUserPassword: String = ""
   val dbaUser: String = "vt_dba_tcp_full"