Add initial skipping of additional images

Signed-off-by: Riddhesh Sanghvi <[email protected]>

Author: mrrobot47

migrations/db/20181016052850_easyengine_insert_docker_images_version.php

@@ -31,8 +31,13 @@ public function up() {
 		$images = EE\Utils\get_image_versions();
 
 		$query = '';
+		$skip_download = [
+			'easyengine/php5.6',
+			'easyengine/php7.3',
+			'easyengine/newrelic-daemon',
+		];
 		foreach ( $images as $image => $tag ) {
-			if ( 'easyengine/php5.6' === $image ) {
+			if ( in_array( $image, $skip_download ) ) {
 				continue;
 			}
 			EE::log( "Checking and Pulling docker image $image:$tag" );