Add pipeline helper scripts

Created a python script to bundle the application and some bash
scripts to pull and push packages from the registry.

deploy/pull-package.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+CONFIG_FILE="$(dirname "$0")/local.env"
+if [ -f "$CONFIG_FILE" ]; then
+  source "$CONFIG_FILE"
+fi
+
+VERSION="${VERSION:-${1:-latest}}"
+if [ -z "$VERSION" ]; then
+  echo "Usage: $0 <version>"
+  echo "Or set VERSION env var."
+  exit 1
+fi
+
+OUTDIR="${DOWNLOAD_DIR:-downloads}"
+mkdir -p "$OUTDIR"
+
+FILENAME="${VERSION}.chess.zip"
+URL="${REGISTRY_URL}/api/packages/projects/generic/chess/${VERSION}/chess.zip"
+
+echo "${URL}"
+
+echo "[*] Pulling package $FILENAME (version: $VERSION) from registry..."
+curl -f -u "${REGISTRY_USER}:${REGISTRY_TOKEN}" \
+  -o "${OUTDIR}/${FILENAME}" \
+  "$URL"
+
+echo "[+] Downloaded to ${OUTDIR}/${FILENAME}"