FROM ubuntu:18.04 RUN rm /bin/sh && ln -s /bin/bash /bin/sh RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections RUN apt-get -y update \ && apt-get -y install \ build-essential \ gcc \ apt-utils \ pkg-config \ software-properties-common \ apt-transport-https \ libssl-dev \ sudo \ bash \ curl \ tar \ git \ netcat \ bind9 \ dnsutils \ && apt-get -y update \ && apt-get -y upgrade \ && apt-get -y autoremove \ && apt-get -y autoclean ENV GOROOT /usr/local/go ENV GOPATH /go ENV PATH ${GOPATH}/bin:${GOROOT}/bin:${PATH} ENV GO_VERSION REPLACE_ME_GO_VERSION ENV GO_DOWNLOAD_URL https://storage.googleapis.com/golang RUN rm -rf ${GOROOT} \ && curl -s ${GO_DOWNLOAD_URL}/go${GO_VERSION}.linux-amd64.tar.gz | tar -v -C /usr/local/ -xz \ && mkdir -p ${GOPATH}/src ${GOPATH}/bin \ && go version \ && go get -v -u github.com/mattn/goreman