Docker启动Elasticsearch失败

解决：启动时调整内存分配 -e "ES_JAVA_OPTS=-Xms512m -Xmx512m"

参考命令：
docker run -p 9200:9200 -p 9300:9300 --name elasticsearch \
-e "ES_JAVA_OPTS=-Xms512m -Xmx512m" \
-e "discovery.type=single-node" \
-e "cluster.name=elasticsearch" \
-v /mydata/elasticsearch/plugins:/usr/share/elasticsearch/plugins \
-v /mydata/elasticsearch/data:/usr/share/elasticsearch/data \
-d elasticsearch:7.6.2