docker-cli

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Sebastiaan van Stijn a1048523d2 Allow Dockerfile from outside build-context

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>

2018-02-20 16:50:49 +01:00

build

Allow Dockerfile from outside build-context

2018-02-20 16:50:49 +01:00

testdata

Use t.Run() for tests

2017-10-30 13:00:03 -04:00

build_session.go

Add nakedret linter.

2017-10-12 11:48:51 -04:00

build_test.go

Allow Dockerfile from outside build-context