update entrypoint script

see https://github.com/composer/docker/issues/107

library/composer

@@ -5,10 +5,10 @@ GitRepo: https://github.com/composer/docker.git
 
 Tags: 1.10.0, 1.10, 1, latest
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le
-GitCommit: 96bfff819c54dd14297b66b519706110f64e0032
+GitCommit: 6deedc6a8c89b17c9a6ca61a28c8b206513c76f8
 Directory: 1.10
 
 Tags: 1.9.3, 1.9
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le
-GitCommit: 96bfff819c54dd14297b66b519706110f64e0032
+GitCommit: 6deedc6a8c89b17c9a6ca61a28c8b206513c76f8
 Directory: 1.9