Skip docker pull output from snapshot testing

_tests/custom_tests/tests/Traits/SnapshotHelpers.php

@@ -29,6 +29,8 @@ public function assertMatchesNormalizedSnapshot( string $actual, ?\Spatie\Snapsh
 			'npm',
 		];
 
+		$processing_docker_pull_output = false;
+
 		foreach ( explode( "\n", $actual ) as $line ) {
 			foreach ( $lines_to_remove as $to_remove ) {
 				if ( strpos( $line, $to_remove ) !== false ) {
@@ -40,6 +42,19 @@ public function assertMatchesNormalizedSnapshot( string $actual, ?\Spatie\Snapsh
 				continue;
 			}
 
+			/*
+			 * Skip docker pull output.
+			 */
+			if ( strpos( $line, 'Unable to find image') !== false ) {
+				$processing_docker_pull_output = true;
+				continue;
+			} elseif ( $processing_docker_pull_output && strpos( $line, 'Downloaded newer image for' ) !== false ) {
+				$processing_docker_pull_output = false;
+				continue;
+			} elseif ( $processing_docker_pull_output ) {
+				continue;
+			}
+
 			// Normalize timings, eg "(8.9s)" or "(10.9s)", etc.
 			$line = preg_replace( '/\(\d+\.\d+s\)/', '(TIME)', $line );