Upgrade debootstrap version to 1.0.118ubuntu1.6, in the hopes that allows us to install it. Use apt, not apt-get.
@@ -6,5 +6,11 @@ set -o xtrace
########################################
# Install dependencies (currently, just debootstrap)
########################################
-sudo apt-get update
-sudo apt-get install debootstrap=1.0.118ubuntu1
+sudo apt update
+
+# Print available versions for debugging purposes.
+# (You might say, "madison? what's madison?" Just a badly named apt command.)
+sudo apt-cache madison debootstrap
+
+sudo apt install --yes --no-install-recommends \
+ debootstrap=1.0.118ubuntu1.6
