[Container-tools] Trick to do a docker "multi-stage-build" using minishift ?

[Charles Moulliard]

imagebuilder is working. Excellent. Here are the steps I followed to use it

cd $GOPATH/src
go get -u github.com/openshift/imagebuilder/cmd/imagebuilder
minishift start
eval $(minishift docker-env)
imagebuilder -t gcr.io/kubeships/controller-manager:v1 -f
Dockerfile.controller .
--> FROM golang:1.9.4 as builder
...
--> COPY --from=builder /go/src/
github.com/cmoulliard/my-controller/controller-manager .
--> ENTRYPOINT ["./controller-manager"]
--> CMD ["--install-crds=false"]
--> Committing changes to gcr.io/kubeships/controller-manager:v1 ...
--> Done

On Thu, Jun 21, 2018 at 12:42 PM, Charles Moulliard <cmoullia at redhat.com>
wrote:

> Many thanks to share your lights
>
> On Thu, Jun 21, 2018 at 11:59 AM, Xavier Coulon <xcoulon at redhat.com>
> wrote:
>
>> Hello Charles,
>>
>> I've tried it before and failed too, because minishift/Openshift uses an
>> older version of Docker that does not support multi-stage builds:
>>
>> ````
>> $ eval $(minishift docker-env)
>> $ docker version
>> Client:
>>  Version:      18.03.1-ce
>>  API version:  1.24 (downgraded from 1.37)
>>  Go version:   go1.9.5
>>  Git commit:   9ee9f40
>>  Built:        Thu Apr 26 07:13:02 2018
>>  OS/Arch:      darwin/amd64
>>  Experimental: false
>>  Orchestrator: swarm
>>
>> Server:
>>  Engine:
>>   Version:      *1.12.6*
>>   API version:  1.24 (minimum version )
>>   Go version:   go1.6.4
>>   Git commit:   78d1802
>>   Built:        Wed Jan 11 00:23:16 2017
>>   OS/Arch:      linux/amd64
>>   Experimental: false
>> ````
>>
>> I have not tried it yet, but maybe https://github.com/projectatom
>> ic/buildah could help since it supports multi-stage builds since V1.0 (
>> https://github.com/projectatomic/buildah/releases/tag/V1.0 /
>> https://github.com/projectatomic/buildah/pull/495). So you may be able
>> to build and push with Buildah without having to use the Docker daemon
>> running on OpenShift (again, this is just assumptions, it needs to be
>> verified)
>>
>
> As I use a MacBook, I don't think that I could use "buildah" as it
> requires a Linux OS ...
>
>>
>> Also, I found this PR (https://github.com/openshift/imagebuilder/pull/59),
>> so you may want to give a try to https://github.com/openshift/i
>> magebuilder - although it's still apparently in beta for now.
>>
>> HTH.
>>
>>
>>
>>
>> On Thu, Jun 21, 2018 at 11:31 AM, Charles Moulliard <cmoullia at redhat.com>
>> wrote:
>>
>>> Hi
>>>
>>> Is there a trick to be able to do a multi stages build using docker 17.x
>>> running in minishift [1] ?
>>>
>>> E.g. Dockerfile to be processed
>>>
>>> FROM golang:1.9.4 as builder
>>> ..
>>> # Build and test the API code
>>> RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -o
>>> controller-manager ./cmd/controller-manager/main.go
>>> RUN go test ./pkg/... ./cmd/...
>>>
>>> # Copy the controller-manager into a thin image
>>> FROM ubuntu:latest
>>> WORKDIR /root/
>>> COPY --from=builder /go/src/github.com/cmoulliard/
>>> my-controller/controller-manager .
>>>
>>> Docker reports this error :
>>>
>>> docker build . -f Dockerfile.controller -t
>>> gcr.io/kubeships/controller-manager:v1
>>> Sending build context to Docker daemon    246MB
>>> Step 1/23 : FROM golang:1.9.4 as builder
>>> Error parsing reference: "golang:1.9.4 as builder" is not a valid
>>> repository/tag: invalid reference format
>>>
>>> [1] https://docs.docker.com/develop/develop-images/multistage-build/
>>>
>>> Regards
>>>
>>> Charles
>>>
>>> _______________________________________________
>>> Container-tools mailing list
>>> Container-tools at redhat.com
>>> https://www.redhat.com/mailman/listinfo/container-tools
>>>
>>>
>>
>>
>> --
>> Best regards,
>> /Xavier
>>
>
>
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