chore: add note about invalid var name (#10)

* Add note about invalid var name * Update README.md Co-authored-by: Konstantin Chukhlomin <mail@chuhlomin.com>
chuhlomin · May 12, 2023 · 5dd41a8 · 5dd41a8
1 parent b5c1c08
commit 5dd41a8
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/README.md b/README.md
@@ -19,6 +19,8 @@ GitHub Action to render file based on template and passed variables.
 You must set at least `vars` or `vars_path`.  
 You may set both of them (`vars` values will precede over `vars_path`).
 
+Variables names must be alphanumeric strings (must not contain any hyphens).
+
 There are few template functions available:
 
 - `date` – formats timestamp using Go's [time layout](https://golang.org/pkg/time/#pkg-constants).