stretch works best with zesty builds

vm/LXC_README.txt

@@ -15,8 +15,8 @@
 4) Attach to container and install pan.do/ra
 
     sudo lxc-attach -n pandora --clear-env
-    apt-get update -qq
-    apt-get -y install curl
+    apt-get update -qq && apt-get upgrade -y
+    apt-get -y install curl ca-certificates
     sed -i s/ubuntu/pandora/g /etc/passwd /etc/shadow /etc/group
     mv /home/ubuntu /home/pandora
     echo "pandora:pandora" | chpasswd

vm/pandora_install.sh

@@ -18,7 +18,7 @@ else
     SYSTEMD="no"
 fi
 if [ -z "$UBUNTU_CODENAME" ]; then
-    UBUNTU_CODENAME=xenial
+    UBUNTU_CODENAME=zesty
 fi
 export DEBIAN_FRONTEND=noninteractive
 echo "deb http://ppa.launchpad.net/j/pandora/ubuntu ${UBUNTU_CODENAME} main" > /etc/apt/sources.list.d/j-pandora.list