[Question] How to preview a freemarker template on a browser?

[waynemorphic]

Problem

I am facing knowledge gaps in previewing a Freemarker template on a browser before deploying a theme as a JAR archive. For instance, if I have developed login-reset-otp.ftl template, how can I preview it on a browser without ideally building a jar archive and mounting it in a Keycloak docker container?

Assumption

I thought that Freemarker autogenerates the HTML files in the root folder but they seem separate. So, how do I generate an HTML file for login-reset-otp.ftl template? This follows issue #75

Note:

I have tried pnpm test but it fails with several errors, including:

FreeMarker template error:
The following has evaluated to null or missing:
==> realm.name  [in template "document.ftl" at line 28, column 71]

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Tip: It's the step after the last dot that caused this error, not those before it.
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Tip: If the failing expression is known to legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
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