languages/docker: map dockercompose to yaml for treesitter

docs/manual/release-notes/rl-0.9.md

@@ -355,9 +355,6 @@
   more flexibility in nvf and reuse of LSPs across languages. Dropped
   `deprecatedSingleOrListOf` in favor of `listOf` for the affected LSP options.
 
-- Added {option}`vim.lsp.presets.docker-language-server.enable` for Docker
-  support.
-
 - Added {option}`vim.lsp.presets.angular-language-server.enable` for Angular
   Template support.
 
@@ -385,6 +382,11 @@
   [poseidon-rises](https://github.com/poseidon-rises) for creating most of it in
   [!1104](https://github.com/NotAShelf/nvf/pull/1104).
 
+- Added {option}`vim.lsp.presets.docker-language-server.enable` for Docker
+  support.
+
+- Mapped `dockercompose` to be highlighted by treesitter as `yaml`.
+
 - Added [`mdformat`](https://mdformat.rtfd.io/) support to `languages.markdown`
   with the extensions for [GFM](https://github.github.com/gfm/),
   [front matter](https://www.markdownlang.com/advanced/frontmatter.html) and

modules/plugins/languages/docker.nix

@@ -117,6 +117,9 @@ in {
       vim.treesitter = {
         enable = true;
         grammars = [cfg.treesitter.package];
+        filetypeMappings = {
+          yaml = ["dockercompose"];
+        };
       };
     })