fix options blocks

Author: Geometrically

src/main.rs

@@ -290,7 +290,7 @@ async fn main() -> std::io::Result<()> {
 
                 let path = req.path().to_string();
 
-                if parse_var("READ_ONLY").unwrap_or(false) && (req.method() != actix_web::http::Method::GET && req.method() != actix_web::http::Method::HEAD) && !path.starts_with("/v2/version_file") {
+                if parse_var("READ_ONLY").unwrap_or(false) && (req.method() != actix_web::http::Method::GET && req.method() != actix_web::http::Method::HEAD && req.method() != actix_web::http::Method::OPTIONS) && !path.starts_with("/v2/version_file") {
                     let fut = async move {
                         let response = HttpResponse::Forbidden().json(models::error::ApiError {
                             error: "read_only",