RUN wget -nv https://dl.google.com/go/go${g13}.linux-amd64.tar.gz \
&& tar -xf go${g13}.linux-amd64.tar.gz \
&& mv go /opt/go/1.13 \
&& rm -f go*.gz
RUN wget -nv https://dl.google.com/go/go${g13}.linux-amd64.tar.gz \
&& tar -xf go${g13}.linux-amd64.tar.gz \
&& mv go /opt/go/1.13 \
&& rm -f go*.gz