Add support for configuring immutable paths

src/caddy.rs

@@ -83,6 +83,20 @@ impl CaddyController {
             }));
         }
 
+        if !config.immutable_paths.is_empty() {
+            routes_array.push(json!({
+                "match": [{ "path": config.immutable_paths }],
+                "handle": [{
+                    "handler": "headers",
+                    "response": {
+                        "set": {
+                            "Cache-Control": ["public, max-age=15778476, immutable"]
+                        }
+                    }
+                }]
+            }))
+        }
+
         routes_array.push(json!({
             "handle": [{
                 "handler": "file_server",

src/sites.rs

@@ -23,6 +23,8 @@ pub struct SiteConfig {
     pub paths_mode: SiteConfigPathsMode,
     #[serde(default)]
     pub redirects: Vec<SiteConfigRedirect>,
+    #[serde(default)]
+    pub immutable_paths: Vec<String>,
 }
 
 #[derive(Deserialize, Default, Eq, PartialEq)]