Container with go toolchain.

dockerfile-gotoolchain

# Container with go toolchain.
# Create a directory in host and map it to /go volume to persist data between 
# multiple commands. 
# Usage:
# docker build -t go
# docker run --rm -v [dir-in-host]:/go -v $GOPATH/src/app:/go/src/app go get app
# docker run --rm -v [dir-in-host]:/go -v $GOPATH/src/app:/go/src/app go test app
# docker run --rm -v [dir-in-host]:/go -v $GOPATH/src/app:/go/src/app go build -o app/build/out app
#
FROM centos

ENV DOWNLOADS /downloads
ENV TOOLS /tools
ENV GOROOT $TOOLS/go
ENV GOPATH /go
ENV PATH $GOROOT/bin:$PATH

RUN GO_VERSION="go1.8.linux-amd64.tar.gz" && \    
    mkdir -p $GOPATH/src && \
    mkdir -p $GOROOT && \
    mkdir -p $DOWNLOADS && \

    curl -o "$DOWNLOADS/$GO_VERSION" "https://storage.googleapis.com/golang/$GO_VERSION" && \
    tar xz -C "$TOOLS" -f "$DOWNLOADS/$GO_VERSION" && \

    yum install -y git

ENTRYPOINT ["go"]

WORKDIR $GOPATH/src