Fix caddy api proxy

Signed-off-by: Asai Neko <sugar@sne.moe>

devenv.nix

@@ -26,14 +26,23 @@
     enable = true;
     dataDir = "${config.env.DEVENV_STATE}/caddy";
     config = ''
-      {
-          debug
-      }
-      :8080 {
-          root * ${config.env.DEVENV_ROOT}/.outputs/static
-          file_server
-          reverse_proxy /api/v1/* http://127.0.0.1:8000
-      }
+       :8080 {
+           handle /api/* {
+      	        reverse_proxy 127.0.0.1:8000
+           }
+
+           handle {
+      	        root * ${config.env.DEVENV_ROOT}/.outputs/static
+
+      	        encode zstd gzip
+
+      	        @assets path /assets/*
+      	        header @assets Cache-Control "public, max-age=31536000, immutable"
+
+      	        try_files {path} /index.html
+      	        file_server
+           }
+       }
     '';
   };