PACKAGES="$LAYER_BASIC $DOWNLOAD_PACKAGES"
+# Packages from pypi to pre-install
+PYPI="charms.reactive charmhelpers paramiko>=1.16.0,<1.17"
+
function cache() {
series=$1
container=juju-${series}-base
lxc delete $container -f || true
lxc launch ubuntu:$series $container
- sleep 5 # wait for network
+
+ # Wait for the container to get an IP address
+ lxc exec $container -- bash -c "for i in {1..60}; do sleep 1; ping -c1 10.44.127.1 &> /dev/null && break; done"
lxc exec $container -- apt-get update -y
lxc exec $container -- apt-get upgrade -y
lxc exec $container -- apt-get install -y $PACKAGES $2
+ lxc exec $container -- pip3 install --upgrade $PYPI
lxc stop $container
lxc image delete $alias || true