scripts: Switch default tutorial from rkt to docker

scripts/dev/build-aci

@@ -1,32 +0,0 @@
-#!/usr/bin/env bash
-set -e
-
-DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-GIT_SHA=$($DIR/git-version)
-
-# Start with an empty ACI
-acbuild --debug begin
-
-# In the event of the script exiting, end the build
-trap "{ export EXT=$?; acbuild --debug end && exit $EXT; }" EXIT
-
-# Name the ACI
-acbuild --debug set-name coreos.com/matchbox
-
-# Add a version label
-acbuild --debug label add version $GIT_SHA
-
-# Add alpine base dependency
-acbuild --debug dep add quay.io/coreos/alpine-sh
-
-# Copy the static binary
-acbuild --debug copy bin/matchbox /matchbox
-
-# Add a port for HTTP traffic
-acbuild --debug port add www tcp 8080
-
-# Set the exec command
-acbuild --debug set-exec -- /matchbox
-
-# Save and overwrite any older matchbox ACI
-acbuild --debug write --overwrite matchbox.aci