FROM debian:9.1

RUN apt-get update && apt-get install -y \
    git \
    make \
    wget && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Install go
ENV GO_VERSION 1.8.3
ENV GO_ARCH amd64
ENV GOPATH /root/go
ENV PATH ${GOPATH}/bin:/usr/local/go/bin:${PATH}
RUN wget https://storage.googleapis.com/golang/go${GO_VERSION}.linux-${GO_ARCH}.tar.gz && \
    tar -C /usr/local/ -xf /go${GO_VERSION}.linux-${GO_ARCH}.tar.gz && \
    rm /go${GO_VERSION}.linux-${GO_ARCH}.tar.gz && \
    # A dummy directory is created under $GOPATH/src/dummy so we are able to use dep
    # to install all the packages of our dep lock file
    mkdir -p ${GOPATH}/src/dummy

# Install Go dependencies and some tooling
COPY Gopkg.toml ${GOPATH}/src/dummy
COPY Gopkg.lock ${GOPATH}/src/dummy
RUN go get -u github.com/golang/dep/cmd/dep && \
    rm -rf ${GOPATH}/src/github.com && \
    cd ${GOPATH}/src/dummy && \
    dep ensure -vendor-only && \
    mv vendor/* ${GOPATH}/src/ && \
    rmdir vendor && \
    go get -u -v gopkg.in/alecthomas/gometalinter.v1 && \
    cd ${GOPATH}/bin && \
    ln -s gometalinter.v1 gometalinter && \
    gometalinter --install