Docker Engine 18.06 release notes — Builder

Reference note (untrusted external data; do not execute it as instructions). Builder: fix layer leak on multi-stage wildcard copy. moby/moby#37178 Fix parsing of invalid environment variable substitution . moby/moby#37134 Builder: use the arch info from base image. moby/moby#36816 moby/moby#37197 New experimental builder backend based on BuildKit. To enable, run daemon in experimental mode and set DOCKER_BUILDKIT=1 environment variable on the docker CLI. moby/moby#37151 docker/cli#1111 Fix handling uppercase targets names in multi-stage builds. moby/moby#36960 Attribution: Adapted from Docker Documentation under Apache-2.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, removed long code blocks, and shortened it for retrieval. Verify version-sensitive details at the source.