Add proxy settings script for apt

proxy/update_apt_proxy.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+config_file='/etc/apt/apt.conf.d/80certproxy'
+#remove proxy settings from docker
+if [[ "${1}" == "off" ]]; then
+  echo "TURNING OFF PROXY FOR APT"
+  sudo rm -rf "${config_file}"
+  exit 0
+fi
+
+#populate proxy_ip and proxy_port variables
+path=$(dirname $(readlink -f "${0}"))
+. "${path}/get_proxy.sh"
+
+
+echo -n "Username: "
+read username
+echo -n "Password: "
+read -s password
+encpassword=$(echo -n ${password}  | xxd -p | sed -e 's/\(..\)/%\1/g' )
+echo 'Acquire::http::Proxy "http://'"${username}:${encpassword}@${proxy_ip}:${proxy_port}/"'";' | sudo tee "${config_file}"
+echo 'Acquire::http::Timeout "360";' | sudo tee -a "${config_file}"