Solr can't create core in docker command

This is a error while create a new core by commandline in docker.

solr在docker下創建core失敗的問題, 官網及所有博客中給的命令中沒包含端口號, 估計是create_core程序更新導致的.

>> docker exec -it --user=solr my-solr bin/solr create_core  -c gettingstarted

bin/solr: line 957: ps: command not found
Failed to determine the port of a local Solr instance, cannot create gettingstarted!

Because it’s missing the port, but the right command is :

>> docker exec -it --user=solr my-solr bin/solr create_core -p 8983 -c gettingstarted

Copying configuration to new core instance directory:
/opt/solr/server/solr/gettingstarted

Creating new core 'gettingstarted' using command:
http://localhost:8983/solr/admin/cores?action=CREATE&name=gettingstarted&instanceDir=gettingstarted

{
  "responseHeader":{
    "status":0,
    "QTime":1111},
  "core":"gettingstarted"}

you
can use this command to search help.

docker exec -it --user=solr my-solr bin/solr -help