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Merge pull request #843 from docker/buildkit-location-fix-781 

Correct the location in the Buildkit 781
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Justin I. Nevill 2018-11-04 13:30:27 -05:00 committed by GitHub
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10
develop/develop-images/build_enhancements.md
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@ -4,10 +4,6 @@ description: Learn the new features of Docker Build
keywords: build, security, engine, secret, buildkit keywords: build, security, engine, secret, buildkit
--- ---
> Beta disclaimer
>
> This is beta content. It is not yet complete and should be considered a work in progress. This content is subject to change without notice.
Docker Build is one of the most used features of the Docker Engine - users ranging from developers, build teams, and release teams all use Docker Build. Docker Build is one of the most used features of the Docker Engine - users ranging from developers, build teams, and release teams all use Docker Build.
Docker Build enhancements for 18.09 release introduces a much-needed overhaul of the build architecture. By integrating BuildKit, users should see an improvement on performance, storage management, feature functionality, and security. Docker Build enhancements for 18.09 release introduces a much-needed overhaul of the build architecture. By integrating BuildKit, users should see an improvement on performance, storage management, feature functionality, and security.
@ -105,7 +101,7 @@ $ docker build --progress=plain .
To override the default frontend, set the first line of the Dockerfile as a comment with a specific frontend image: To override the default frontend, set the first line of the Dockerfile as a comment with a specific frontend image:
``` ```
# syntax = <frontend image>, e.g. # syntax = tonistiigi/dockerfile:secrets20180808 # syntax = <frontend image>, e.g. # syntax = docker/dockerfile:1.0-experimental
``` ```
## New Docker Build secret information ## New Docker Build secret information
@ -122,11 +118,11 @@ For example, with a secret piece of information stored in a text file:
$ echo 'WARMACHINEROX' > mysecret.txt $ echo 'WARMACHINEROX' > mysecret.txt
``` ```
And with a Dockerfile that specifies use of a buildkit frontend `dockerfile:secrets20180828`, the secret can be accessed. And with a Dockerfile that specifies use of a buildkit frontend `docker/dockerfile:1.0-experimental`, the secret can be accessed.
For example: For example:
``` ```
# syntax = dockerfile:secrets20180828 # syntax = docker/dockerfile:1.0-experimental
FROM alpine FROM alpine
RUN --mount=type=secret,id=mysecret cat /run/secrets/mysecret # shows secret from default secret location RUN --mount=type=secret,id=mysecret cat /run/secrets/mysecret # shows secret from default secret location
RUN --mount=type=secret,id=mysecret,dst=/foobar cat /foobar # shows secret from custom secret location RUN --mount=type=secret,id=mysecret,dst=/foobar cat /foobar # shows secret from custom secret location