Make LocalStack image configurable (#1873)

Author: aosagie

core/src/main/java/org/testcontainers/utility/TestcontainersConfiguration.java

@@ -81,6 +81,10 @@ public String getPulsarImage() {
         return (String) properties.getOrDefault("pulsar.container.image", "apachepulsar/pulsar");
     }
 
+    public String getLocalStackImage() {
+        return (String) properties.getOrDefault("localstack.container.image", "localstack/localstack");
+    }
+
     public boolean isDisableChecks() {
         return Boolean.parseBoolean((String) environmentProperties.getOrDefault("checks.disable", "false"));
     }

docs/features/configuration.md

@@ -42,6 +42,9 @@ Some companies disallow the usage of Docker Hub, but you can override `*.image`
 > **kafka.container.image = confluentinc/cp-kafka**  
 > Used by KafkaContainer 
 
+> **localstack.container.image = localstack/localstack**  
+> Used by LocalStack
+
 ## Customizing Ryuk resource reaper
 
 > **ryuk.container.image = quay.io/testcontainers/ryuk:0.2.3**

modules/localstack/src/main/java/org/testcontainers/containers/localstack/LocalStackContainer.java

@@ -10,6 +10,7 @@
 import org.rnorth.ducttape.Preconditions;
 import org.testcontainers.containers.GenericContainer;
 import org.testcontainers.containers.wait.strategy.Wait;
+import org.testcontainers.utility.TestcontainersConfiguration;
 
 import java.net.InetAddress;
 import java.net.UnknownHostException;
@@ -37,7 +38,7 @@ public LocalStackContainer() {
     }
 
     public LocalStackContainer(String version) {
-        super("localstack/localstack:" + version);
+        super(TestcontainersConfiguration.getInstance().getLocalStackImage() + ":" + version);
 
         withFileSystemBind("//var/run/docker.sock", "/var/run/docker.sock");
         waitingFor(Wait.forLogMessage(".*Ready\\.\n", 1));