bug #1024 Remove version in generated Docker compose files (fabpot)

This PR was merged into the 2.x branch.

Discussion
----------

Remove version in generated Docker compose files

closes #1023

Commits
-------

33ce7c1 Remove version in generated Docker compose files

src/Configurator/DockerComposeConfigurator.php

@@ -236,7 +236,7 @@ private function configureDockerCompose(Recipe $recipe, array $config, bool $upd
             $dockerComposeFile = $this->findDockerComposeFile($rootDir, $file);
             if (null === $dockerComposeFile) {
                 $dockerComposeFile = $rootDir.'/'.$file;
-                file_put_contents($dockerComposeFile, "version: '3'\n");
+                file_put_contents($dockerComposeFile, '');
                 $this->write(sprintf('  Created <fg=green>"%s"</>', $file));
             }
 

tests/Configurator/DockerComposeConfiguratorTest.php

@@ -28,8 +28,6 @@
 class DockerComposeConfiguratorTest extends TestCase
 {
     public const ORIGINAL_CONTENT = <<<'YAML'
-version: '3.4'
-
 services:
   app:
     build:
@@ -640,11 +638,10 @@ public function testConfigureFileInParentDir()
     public function testConfigureWithoutExistingDockerComposeFiles()
     {
         $dockerComposeFile = FLEX_TEST_DIR.'/compose.yaml';
-        $defaultContent = "version: '3'\n";
 
         $this->configurator->configure($this->recipeDb, self::CONFIG_DB, $this->lock);
 
-        $this->assertStringEqualsFile($dockerComposeFile, $defaultContent.<<<'YAML'
+        $this->assertStringEqualsFile($dockerComposeFile, <<<'YAML'
 
 services:
 ###> doctrine/doctrine-bundle ###
@@ -671,7 +668,7 @@ public function testConfigureWithoutExistingDockerComposeFiles()
         );
 
         $this->configurator->unconfigure($this->recipeDb, self::CONFIG_DB, $this->lock);
-        $this->assertEquals(trim($defaultContent), file_get_contents($dockerComposeFile));
+        $this->assertEquals('', file_get_contents($dockerComposeFile));
     }
 
     public function testUpdate()
@@ -691,8 +688,6 @@ public function testUpdate()
         file_put_contents(
             FLEX_TEST_DIR.'/docker-compose.yml',
             <<<EOF
-version: '3'
-
 services:
 ###> doctrine/doctrine-bundle ###
   database:
@@ -768,8 +763,6 @@ public function testUpdate()
         );
 
         $this->assertSame(['docker-compose.yml' => <<<EOF
-version: '3'
-
 services:
 ###> doctrine/doctrine-bundle ###
   database:
@@ -807,8 +800,6 @@ public function testUpdate()
         ], $recipeUpdate->getOriginalFiles());
 
         $this->assertSame(['docker-compose.yml' => <<<EOF
-version: '3'
-
 services:
 ###> doctrine/doctrine-bundle ###
   database: