package X unrecognized import path : import path does not begin with hostname

Question

In my Golang/gin project i have a dockerfile. This docker file looks like this

FROM golang:latest

RUN mkdir -p /go/src/myAppName
ADD . /go/src/myAppName
WORKDIR /go/src/myAppName

ENV GOPATH /go
ENV PATH $GOPATH/bin:/usr/local/go/bin:$PATH

RUN go get -d -v ./...
RUN go install -v ./...
RUN go get github.com/pilu/fresh

EXPOSE 8080

CMD ["fresh"]

When I run the command docker build . --tag=myAppName:dev docker build . --tag=myAppName:dev in the root directory of the project where the Dockerfile is located, it runs fine untill it wants to install the packages with the go get -d -v ./... command.

My project has a lot of different packages located in the project itself, so when it tries to import those it tells me the following:

package myAppName/app: unrecognised import path "myAppName/app" (import path does not begin with hostname).

I have read this question and promptly set the $GOPATH in my Dockerfile.

I also read this question and tried building the project the manual way without fresh and their method of not setting the GOPATH at all but doing it through the WORKDIR command.

Finally I tried using the go-wrapper commands, but these seem to not be available when i try to use them, resulting in the error command not found: go-wrapper

Unfortunately neither of these work, thus my question.

Any help or pointers in the right direction are much appreciated.

Answer 1

After experimennts I've came to the solution:

1. All dependencies are vendored with dep . It's a quite easy and very useful tool - I recommend start using it.

2. All packages (and my own projects's too) are located by their full name - $GOPATH/src/github.com/username/project/package/etc

3. Then you may use simple Dockerfile like this:

    FROM golang:latest AS builder RUN go version COPY . "/go/src/github.com/user/project" WORKDIR "/go/src/github.com/user/project" RUN set -x && \\ apt-get update && \\ go get github.com/golang/dep/cmd/dep && \\ which dep && \\ date #RUN go get -v -t . # <- alternative way if you really don't want to use vendoring RUN set -x && \\ dep ensure -v && \\ echo "vendor:" && \\ dep status RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o /run-file CMD ["/run-file"] EXPOSE 8000