Historically, the Dockerfile had to be insde the build-context, because it was
sent as part of the build-context.
3f6dc81e10
added support for passing the Dockerfile through stdin, in which case the
contents of the Dockerfile is injected into the build-context.
This patch uses the same mechanism for situations where the location of the
Dockerfile is passed, and its path is outside of the build-context.
Before this change:
$ mkdir -p myproject/context myproject/dockerfiles && cd myproject
$ echo "hello" > context/hello
$ echo -e "FROM busybox\nCOPY /hello /\nRUN cat /hello" > dockerfiles/Dockerfile
$ docker build --no-cache -f $PWD/dockerfiles/Dockerfile $PWD/context
unable to prepare context: the Dockerfile (/Users/sebastiaan/projects/test/dockerfile-outside/myproject/dockerfiles/Dockerfile) must be within the build context
After this change:
$ mkdir -p myproject/context myproject/dockerfiles && cd myproject
$ echo "hello" > context/hello
$ echo -e "FROM busybox\nCOPY /hello /\nRUN cat /hello" > dockerfiles/Dockerfile
$ docker build --no-cache -f $PWD/dockerfiles/Dockerfile $PWD/context
Sending build context to Docker daemon 2.607kB
Step 1/3 : FROM busybox
---> 6ad733544a63
Step 2/3 : COPY /hello /
---> 9a5ae1c7be9e
Step 3/3 : RUN cat /hello
---> Running in 20dfef2d180f
hello
Removing intermediate container 20dfef2d180f
---> ce1748f91bb2
Successfully built ce1748f91bb2
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
docker/cli
This repository is the home of the cli used in the Docker CE and Docker EE products.
Development
docker/cli is developed using Docker.
Build a linux binary:
$ make -f docker.Makefile binary
Build binaries for all supported platforms:
$ make -f docker.Makefile cross
Run all linting:
$ make -f docker.Makefile lint
List all the available targets:
$ make help
In-container development environment
Start an interactive development environment:
$ make -f docker.Makefile shell
In the development environment you can run many tasks, including build binaries:
$ make binary
Legal
Brought to you courtesy of our legal counsel. For more context, please see the NOTICE document in this repo.
Use and transfer of Docker may be subject to certain restrictions by the United States and other governments.
It is your responsibility to ensure that your use and/or transfer does not violate applicable laws.
For more information, please see https://www.bis.doc.gov
Licensing
docker/cli is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.