feat: upgrade TinkerPop to 3.8.1 and support JDK 21 #42

	#
	# Licensed to the Apache Software Foundation (ASF) under one or more
	# contributor license agreements. See the NOTICE file distributed with
	# this work for additional information regarding copyright ownership.
	# The ASF licenses this file to You under the Apache License, Version 2.0
	# (the "License"); you may not use this file except in compliance with
	# the License. You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	#

	name: "Docker Build CI"

	on:
	push:
	branches:
	- master
	- 'release-*'
	pull_request:
	paths:
	- '*/Dockerfile'
	- '.dockerignore'

	jobs:
	docker-build:
	runs-on: ubuntu-24.04
	strategy:
	fail-fast: false
	matrix:
	dockerfile:
	- hugegraph-pd/Dockerfile
	- hugegraph-store/Dockerfile
	- hugegraph-server/Dockerfile
	- hugegraph-server/Dockerfile-hstore

	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Build ${{ matrix.dockerfile }}
	run: \|
	IMAGE_ID=$(docker build -q -f ${{ matrix.dockerfile }} .)
	echo "Built: $IMAGE_ID"
	HC=$(docker inspect --format='{{json .Config.Healthcheck}}' "$IMAGE_ID")
	echo "Healthcheck: $HC"
	[[ "$HC" != "null" ]] \|\| { echo "ERROR: HEALTHCHECK missing in ${{ matrix.dockerfile }}"; exit 1; }

Provide feedback