feat: Add postgres container

src/Container/Container.php

@@ -38,7 +38,7 @@ class Container
      */
     private array $mounts = [];
 
-    public function __construct(private string $image)
+    protected function __construct(private string $image)
     {
         $this->wait = new WaitForNothing();
     }

src/Container/MariaDBContainer.php

@@ -8,7 +8,7 @@ use Testcontainer\Wait\WaitForExec;
 
 class MariaDBContainer extends Container
 {
-    public function __construct(string $version = 'latest', string $mysqlRootPassword = 'root')
+    private function __construct(string $version, string $mysqlRootPassword)
     {
         parent::__construct('mariadb:' . $version);
         $this->withEnvironment('MARIADB_ROOT_PASSWORD', $mysqlRootPassword);

src/Container/MySQLContainer.php

@@ -8,7 +8,7 @@ use Testcontainer\Wait\WaitForExec;
 
 class MySQLContainer extends Container
 {
-    public function __construct(string $version = 'latest', string $mysqlRootPassword = 'root')
+    private function __construct(string $version, string $mysqlRootPassword)
     {
         parent::__construct('mysql:' . $version);
         $this->withEnvironment('MYSQL_ROOT_PASSWORD', $mysqlRootPassword);

src/Container/OpenSearchContainer.php

@@ -8,7 +8,7 @@ use Testcontainer\Wait\WaitForHttp;
 
 class OpenSearchContainer extends Container
 {
-    public function __construct(string $version = 'latest')
+    private function __construct(string $version)
     {
         parent::__construct('opensearchproject/opensearch:' . $version);
         $this->withEnvironment('discovery.type', 'single-node');

src/Container/PostgresContainer.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Testcontainer\Container;
+
+class PostgresContainer extends Container
+{
+    private function __construct(string $version, string $rootPassword)
+    {
+        parent::__construct('mariadb:' . $version);
+        $this->withEnvironment('POSTGRES_PASSWORD', $rootPassword);
+    }
+
+    public static function make(string $version = 'latest', string $mysqlRootPassword = 'root'): self
+    {
+        return new self($version, $mysqlRootPassword);
+    }
+
+    public function withPostgresUser(string $username): self
+    {
+        $this->withEnvironment('POSTGRES_USER', $username);
+
+        return $this;
+    }
+
+    public function withPostgresDatabase(string $database): self
+    {
+        $this->withEnvironment('POSTGRES_DB', $database);
+
+        return $this;
+    }
+}

src/Container/RedisContainer.php

@@ -8,7 +8,7 @@ use Testcontainer\Wait\WaitForLog;
 
 class RedisContainer extends Container
 {
-    public function __construct(string $version = 'latest')
+    private function __construct(string $version)
     {
         parent::__construct('redis:' . $version);
         $this->withWait(new WaitForLog('Ready to accept connections'));

tests/Integration/ContainerTest.php

@@ -9,6 +9,7 @@ use Redis;
 use Testcontainer\Container\MariaDBContainer;
 use Testcontainer\Container\MySQLContainer;
 use Testcontainer\Container\OpenSearchContainer;
+use Testcontainer\Container\PostgresContainer;
 use Testcontainer\Container\RedisContainer;
 
 class ContainerTest extends TestCase
@@ -95,4 +96,26 @@ class ContainerTest extends TestCase
 
         $this->assertEquals('docker-cluster', $data['cluster_name']);
     }
+
+    public function testPostgreSQLContainer(): void
+    {
+        $container = PostgresContainer::make('latest', 'test')
+            ->withPostgresUser('test')
+            ->withPostgresDatabase('foo');
+
+
+        $pdo = new \PDO(
+            sprintf('postgres:host=%s;port=3306', $container->getAddress()),
+            'test',
+            'test',
+        );
+
+        $query = $pdo->query('SHOW databases');
+
+        $this->assertInstanceOf(\PDOStatement::class, $query);
+
+        $databases = $query->fetchAll(\PDO::FETCH_COLUMN);
+
+        $this->assertContains('foo', $databases);
+    }
 }