- 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/Container/TestContainer.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Testcontainers\Container;
+
+use Testcontainers\Wait\WaitStrategy;
+
+interface TestContainer
+{
+    public function start(): StartedGenericContainer;
+
+    /**
+     * TODO: replace with array after deprecated implementation is removed
+     * @param array<string, string>|string $env
+     */
+    public function withEnvironment(array | string $env, ?string $value): static;
+
+    /**
+     * @param array<string> $command
+     */
+    public function withCommand(array $command): static;
+
+    public function withEntrypoint(string $entryPoint): static;
+
+    /**  @param int|string|array<int|string> $ports One or more ports to expose. */
+    public function withExposedPorts(...$ports): static;
+
+    public function withWait(WaitStrategy $waitStrategy): static;
+
+    public function withNetwork(string $networkName): static;
+
+    public function withPrivilegedMode(): static;
+}