Merge pull request #24700 from Imajie/s3-creds

Resolves #24699, Support ES2 and ECS instance providers for S3 buckets

Author: rullzer

lib/private/Files/ObjectStore/S3ConnectionTrait.php

@@ -32,6 +32,7 @@
 
 use Aws\ClientResolver;
 use Aws\Credentials\CredentialProvider;
+use Aws\Credentials\EcsCredentialProvider;
 use Aws\Credentials\Credentials;
 use Aws\Exception\CredentialsException;
 use Aws\S3\Exception\S3Exception;
@@ -105,7 +106,10 @@ public function getConnection() {
 			CredentialProvider::chain(
 				$this->paramCredentialProvider(),
 				CredentialProvider::env(),
-				CredentialProvider::instanceProfile()
+				CredentialProvider::assumeRoleWithWebIdentityCredentialProvider(),
+				!empty(getenv(EcsCredentialProvider::ENV_URI))
+					? CredentialProvider::ecsCredentials()
+					: CredentialProvider::instanceProfile()
 			)
 		);