nvm安裝node提示
Version 'stable' not found - try nvm ls-remote to browse available versions.
nvm ls-remote shows only list of iojs and no versions of node (macOS) #3206
Cannot install node using nvm | nvm ls-remote returns N/A
問題原因：主要是網路問題
解決辦法：
root@hcss-ecs-b496:~# NVM_NODEJS_ORG_MIRROR=http://nodejs.org/dist nvm install 20
參考
Cannot install node using nvm | nvm ls-remote returns N/A · Issue #2034 · nvm-sh/nvm