moby/buildkit dockerfile/1.21.0-rc1

on GitHub

Usage

# syntax=docker.io/docker/dockerfile-upstream:1.21.0-rc1

Notable changes

• This is a first version of Dockerfile frontend with signed release images built using Docker Github Builder
• Allow skipping Dockerfile linter checks with a per-command comment #6334
• Strip heredoc shebang whitespace before parsing Dockerfile frontends #6402
• Fix CopyIgnoredFile linter rule ignoring negating matches #6356