1.12.0 (2016-07-14) Builder New HEALTHCHECK Dockerfile instruction to support user-defined healthchecks #23218 New SHELL Dockerfile instruction to specify the default shell when using the shell form for commands in a Dockerfile #22489 Add #escape= Dockerfile directive to support platform-specific parsing of file paths in Dockerfile #22268 Add support for comments in .dockerignore #23111 Support fo