Docker build error: fork/exec /usr/lib/google-golang/pkg/tool/linux_amd64/6g: no such file or directory about gb

[jbuberel]

For what it is worth, I have now reproduced this same error using ubuntu:latest as the base image.

The Dockerfile contents:

FROM ubuntu:latest

RUN apt-get update \
    && apt-get install -y \
       curl gcc git libc6-dev make \
       --no-install-recommends \
    && rm -rf /var/lib/apt/lists/*


ENV GOLANG_VERSION 1.4.2
ENV PATH /go/bin:/usr/src/go/bin:$PATH
ENV GOPATH /go

RUN curl --insecure -sSL https://golang.org/dl/go$GOLANG_VERSION.src.tar.gz \
    | tar -v -C /usr/src -xz
RUN cd /usr/src/go/src && ./make.bash --no-clean 2>&1
RUN mkdir -p /go/src/app /go/bin && chmod -R 777 /go

WORKDIR /go
ENV GIT_SSL_NO_VERIFY true
RUN go get github.com/constabulary/gb/...

COPY . /go

RUN gb build all

The error message is identical:

2015/05/01 15:13:20 INFO compile github.com/jbuberel/prime_finder/app [server.go]
2015/05/01 15:13:20 command "build" failed: run: [/usr/lib/google-golang/pkg/tool/linux_amd64/6g -p github.com/constabulary/gb/cmd/gb -pack -o /tmp/gb261408936/github.com/constabulary/gb/cmd/gb/main.a -I /tmp/gb261408936 -I /go/pkg/linux/amd64 -complete build.go main.go plugin.go test.go]: [/usr/lib/google-golang/pkg/tool/linux_amd64/6g -p github.com/constabulary/gb/cmd/gb -pack -o /tmp/gb261408936/github.com/constabulary/gb/cmd/gb/main.a -I /tmp/gb261408936 -I /go/pkg/linux/amd64 -complete build.go main.go plugin.go test.go]: fork/exec /usr/lib/google-golang/pkg/tool/linux_amd64/6g: no such file or directory
2015/05/01 15:13:20 INFO build duration: 10.005319ms map[compile:4.017273ms]

[jbuberel]

Possibly related to: moby/moby#8539

[jbuberel]

Interesting - setting the GOBIN environment variable inside the Docker image seems to have resolved the problem. I am going to next verify this against the google/golang docker base image.

FROM ubuntu:latest

RUN apt-get update \
    && apt-get install -y \
       curl gcc git libc6-dev make \
       --no-install-recommends \
    && rm -rf /var/lib/apt/lists/*


ENV GOLANG_VERSION 1.4.2
ENV PATH /go/bin:/usr/src/go/bin:$PATH
ENV GOPATH /go

RUN mkdir -p /gosrc

RUN curl --insecure -sSL https://golang.org/dl/go$GOLANG_VERSION.src.tar.gz \
    | tar -v -C /gosrc -xz
RUN cd /gosrc/go/src && ./make.bash --no-clean 2>&1
RUN mkdir -p /go/ /go/bin && chmod -R 777 /go

ENV GOBIN /gosrc/go/bin
ENV PATH  /gosrc/go/bin:$PATH

WORKDIR /go
ENV GIT_SSL_NO_VERIFY true
RUN go get github.com/constabulary/gb/...

COPY . /go

RUN gb build all

[jbuberel]

Confirmed, the problem seems to be solvable by specifically setting the GOBIN environment variable to ensure it points to the same location where the go command was installed into.

Is this worth mentioning in the docs?

[davecheney]

Hi Jason, Long story made short, the compiler is not where it is expected to be. The compiler is expected to be in /usr/src/go, but somehow this path is being mutated into /usr/lib/google-golang. In an effort to stamp our the horror of the GOROOT variable, gb does not recognise it, use -goroot $PATH to point to the location where Go is installed and it should work. Please let me know how you go.

[jbuberel]

After grabbing the latest gb snapshot, the problem is now resolved by using the -goroot as you suggested.

The final, working, Dockerfile is this:

FROM gcr.io/google_appengine/base

RUN apt-get update \
    && apt-get install -y \
       curl gcc git libc6-dev make \
       --no-install-recommends \
    && rm -rf /var/lib/apt/lists/*

ENV GOLANG_VERSION 1.4.2
ENV PATH /go/bin:/gosrc/go/bin:$PATH
ENV GOPATH /go

RUN mkdir -p /gosrc

RUN curl -sSL https://golang.org/dl/go$GOLANG_VERSION.src.tar.gz \
    | tar -v -C /gosrc -xz
RUN cd /gosrc/go/src && ./make.bash --no-clean 2>&1
RUN mkdir -p /go/ /go/bin && chmod -R 777 /go

WORKDIR /go

COPY . /go
RUN rm -rf src/github.com/constabulary/
RUN rm -rf vendor/src/github.com/constabulary/

RUN go get github.com/constabulary/gb/...

RUN ["/go/bin/gb", "build", "-goroot=/gosrc/go", "all" ]

ENTRYPOINT ["/go/bin/app"]