+FROM ubuntu:20.04 as INSTALL
+
+ARG APT_PROXY
+RUN if [ ! -z $APT_PROXY ] ; then \
+ echo "Acquire::http::Proxy \"$APT_PROXY\";" > /etc/apt/apt.conf.d/proxy.conf ;\
+ echo "Acquire::https::Proxy \"$APT_PROXY\";" >> /etc/apt/apt.conf.d/proxy.conf ;\
+ fi
+
+ARG APT_PROXY
+RUN if [ ! -z $APT_PROXY ] ; then \
+ echo "Acquire::http::Proxy \"$APT_PROXY\";" > /etc/apt/apt.conf.d/proxy.conf ;\
+ echo "Acquire::https::Proxy \"$APT_PROXY\";" >> /etc/apt/apt.conf.d/proxy.conf ;\
+ fi