Simplify Lokksmith integration

server/src/test/kotlin/dev/ulfrx/recipe/auth/MeRouteTest.kt

@@ -15,9 +15,11 @@ import io.ktor.server.routing.routing
 import io.ktor.server.testing.testApplication
 import kotlinx.serialization.json.Json
 import org.flywaydb.core.Flyway
-import org.junit.AfterClass
-import org.junit.BeforeClass
+import org.junit.jupiter.api.AfterAll
+import org.junit.jupiter.api.BeforeAll
 import org.testcontainers.containers.PostgreSQLContainer
+import org.testcontainers.junit.jupiter.Container
+import org.testcontainers.junit.jupiter.Testcontainers
 import kotlin.test.Test
 import kotlin.test.assertEquals
 import kotlin.test.assertNotEquals
@@ -34,16 +36,18 @@ import org.jetbrains.exposed.sql.Database as ExposedDatabase
  * process before any test executes; Exposed is connected through Hikari to
  * the container.
  */
+@Testcontainers
 class MeRouteTest {
     companion object {
+        @Container
+        @JvmStatic
         private val postgres = PostgreSQLContainer("postgres:16")
         private lateinit var dataSource: HikariDataSource
         private val json = Json { ignoreUnknownKeys = true }
 
         @JvmStatic
-        @BeforeClass
+        @BeforeAll
         fun setUpClass() {
-            postgres.start()
             Flyway
                 .configure()
                 .dataSource(postgres.jdbcUrl, postgres.username, postgres.password)
@@ -65,10 +69,9 @@ class MeRouteTest {
         }
 
         @JvmStatic
-        @AfterClass
+        @AfterAll
         fun tearDownClass() {
             dataSource.close()
-            postgres.stop()
         }
     }