added ci

scripts/ci/prepare-reference.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+project_dir=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/../.." && pwd)
+reference_parent=${1:?Usage: prepare-reference.sh OUTPUT_DIRECTORY}
+mkdir -p "$reference_parent"
+reference_parent=$(cd -- "$reference_parent" && pwd)
+cd "$project_dir/scripts/ci/vendor"
+printf '%s\n' '1e558d3d2211ea0228596aced2b71306503190c454ec4cb44f172045b3513c34  prosody-cafd74b9c5ea.tar.gz' | sha256sum --check --strict
+tar --no-same-owner -xzf prosody-cafd74b9c5ea.tar.gz -C "$reference_parent"
+cd "$reference_parent/prosody-cafd74b9c5ea"
+./configure --ostype=debian --lua-version=5.4 --lua-suffix=5.4
+make -j2