Missing Sprig functions in webhook templates

[ndegory]

Description

Templates provided by tracee use Sprig functions (such as DateInZone in simple.tmpl). When used in a webhook, as reintroduced with #3448, Sprig is not loaded and these functions cannot be used, limiting the value of the templates.

aqua/tracee-6dkbw[tracee]: Error: printer.(*webhookEventPrinter).Init: template: webhook.tmpl:6: function "dateInZone" not defined

example template:

{
  "hostname": "{{ .HostName }}",
  "message": "Signature name: \"{{ .Metadata.Properties.signatureName }}\" description:\n{{ .Metadata.Description }}",
  "severity": "{{ .Metadata.Properties.Severity }}",
  "time": "{{ dateInZone "2006-01-02T15:04:05Z" (now) "UTC" }}",
  "tags": {
    "category": "{{ .Metadata.Properties.Category }}",
    "external_id": "{{ .Metadata.Properties.external_id }}",
    "signature_id": "{{ .Metadata.Properties.signatureId }}"
  }
}

Output of tracee version:

Tracee version: "v0.19.0"

Output of uname -a:

Linux tracee-6dkbw 5.10.197-186.748.amzn2.x86_64 #1 SMP Tue Oct 10 00:30:07 UTC 2023 x86_64 GNU/Linux

Additional details

[josedonizetti]

@ndegory Thank you for reporting. Looking into it.