Usage
# syntax=docker.io/docker/dockerfile-upstream:1.2.0-rc1
Notable changes
-
RUN --mount
syntax for creating secret, ssh, bind, and cache mounts have been moved to mainline channel #1717 -
Metadata load errors are now handled as fatal to avoid incorrect build results #1395
-
ARG
command now supports defining multiple build args on the same line similarly toENV
#1692 -
--chown
flag inADD
now allows parameter expansion #1473