Hashicorp Vault is now available in the app store. Most of the packaging work was done by @ultraviolet (thanks!)
App store link: https://cloudron.io/store/io.vaultproject.cloudronapp.html
For those (like me) who are new to Vault, https://shadow-soft.com/vault-auto-unseal/ is a good tutorial to understand various concepts like sealing, auto-unseal, key shares, threshold etc.
I have added tests and it's mostly stable, any feedback welcome.
This app is marked as stable now.