- Move most of the stuff for backwards compatibility support into one class

- Added random port logic
- Updated wait wtrategies
- API alignments to make it similar to other official implementations
- ...

src/Wait/WaitForContainer.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Testcontainers\Wait;
+
+use Docker\API\Model\ContainersIdJsonGetResponse200;
+use Testcontainers\Container\StartedTestContainer;
+use Testcontainers\Exception\ContainerNotReadyException;
+
+/**
+ * Simply makes container inspect and checks if container is running.
+ * Uses $timout and $pollInterval in milliseconds to set the parameters for waiting.
+ */
+class WaitForContainer extends BaseWaitStrategy
+{
+    public function wait(StartedTestContainer $container): void
+    {
+        $id = $container->getId();
+        $startTime = microtime(true) * 1000;
+
+        while (true) {
+            $elapsedTime = (microtime(true) * 1000) - $startTime;
+
+            if ($elapsedTime > $this->timeout) {
+                throw new ContainerNotReadyException($id);
+            }
+
+            /** @var ContainersIdJsonGetResponse200 | null $containerInspect */
+            $containerInspect = $container->getClient()->containerInspect($id);
+            $containerStatus = $containerInspect?->getState()?->getStatus();
+
+            if ($containerStatus === 'running') {
+                return;
+            }
+
+            usleep($this->pollInterval * 1000);
+        }
+    }
+}