{{ .<variable name> }}
Take key-value pairs from the CLI and replace them inside the template
$ echo "{{ .foo }}" | korvike -v foo=bar
bar
{{ file <file name> }} / {{ mustFile <file name> }}
Read a file and place it inside the template, file returns an empty string on error, mustFile an error
{{ vault <path> <key> }} / {{ mustVault <path> <key> }}
Read a key from Vault using VAULT_ADDR and VAULT_TOKEN environment variables (or ~/.vault-token file) for authentication. vault returns an empty string on error, mustVault an error