diff --git a/pkg/template/static_context.go b/pkg/template/static_context.go
index 270f97144a..097aceec8f 100644
--- a/pkg/template/static_context.go
+++ b/pkg/template/static_context.go
@@ -110,6 +110,8 @@ func (ctx StaticCtx) FuncMap() template.FuncMap {
 
 	funcMap["Lookup"] = ctx.lookup
 
+	funcMap["AdditionalTLSCACert"] = ctx.additionalTLSCACert
+
 	return funcMap
 }
 
@@ -676,3 +678,8 @@ func (ctx StaticCtx) lookup(apiversion string, resource string, namespace string
 	}
 	return obj
 }
+
+func (ctx StaticCtx) additionalTLSCACert() string {
+	// return the name of a configmap holding additional CA certificates provided by the end user at install time
+	return os.Getenv("SSL_CERT_CONFIGMAP")
+}