Upgrade to Testcontainers 1.12.3

[resolves #189]

Author: mp911de

pom.xml

@@ -49,7 +49,7 @@
         <scram-client.version>2.1</scram-client.version>
         <slf4j.version>1.7.26</slf4j.version>
         <spring-framework.version>5.1.8.RELEASE</spring-framework.version>
-        <testcontainers.version>1.12.1</testcontainers.version>
+        <testcontainers.version>1.12.3</testcontainers.version>
     </properties>
 
     <dependencyManagement>

src/test/java/io/r2dbc/postgresql/util/PostgresqlServerExtension.java

@@ -55,14 +55,7 @@ public final class PostgresqlServerExtension implements BeforeAllCallback, After
             return PostgresqlServerExtension.containerInstance;
         }
 
-        PostgresqlServerExtension.containerInstance = container();
-
-        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
-            containerInstance.stop();
-            containerInstance = null;
-        }, "PostgresqlServerExtension-Shutdown"));
-
-        return PostgresqlServerExtension.containerInstance;
+        return PostgresqlServerExtension.containerInstance = container();
     };
 
     private final DatabaseContainer postgres = getContainer();
@@ -199,6 +192,7 @@ private <T extends PostgreSQLContainer<T>> T container() {
             .withCopyFileToContainer(getHostPath("pg_hba.conf", 0600), "/var/pg_hba.conf")
             .withCopyFileToContainer(getHostPath("setup.sh", 0755), "/var/setup.sh")
             .withCopyFileToContainer(getHostPath("test-db-init-script.sql", 0755), "/docker-entrypoint-initdb.d/test-db-init-script.sql")
+            .withReuse(true)
             .withCommand("/var/setup.sh");
 
         return container;