content: #
  # Copyright 2020 Alexander Vollschwitz
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  #
  
  FROM xelalex/dregsy:latest-alpine
  
  # install & configure Go
  RUN apk add --no-cache go
  ENV GOROOT /usr/lib/go
  ENV GOPATH /go
  ENV GOCACHE /.cache
  ENV PATH /go/bin:${PATH}
  RUN mkdir -p ${GOPATH}/src ${GOPATH}/bin ${GOPATH}/pkg ${GOCACHE}
  
  # non-root user
  ARG USER=go
  ENV HOME /home/${USER}
  RUN apk add --update sudo
  RUN adduser -D ${USER} && \
      adduser ${USER} ping && \
      echo "${USER} ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/${USER} && \
      chmod 0440 /etc/sudoers.d/${USER}
  USER ${USER}
  
  WORKDIR ${GOPATH}
  
  CMD ["go", "version"]
  