[nix] Allow unfree for shells. [docker] Correctly export DOCKER_HOST. [nvim] Disable augment and turn on vtsls

system/features/container-dev.nix

@@ -7,11 +7,12 @@
     };
   };
 
-  home-manager.users.drew = { ... }:
-  {
-    # Add the path to the docker socket to the environment.
-    programs.zsh.profileExtra = ''
-      export DOCKER_HOST=unix://$XDG_RUNTIME_DIR/docker.sock
-    '';
-  };
+  home-manager.users.drew =
+    { ... }:
+    {
+      # Add the path to the docker socket to the environment.
+      programs.zsh.envExtra = ''
+        export DOCKER_HOST=unix://$XDG_RUNTIME_DIR/docker.sock
+      '';
+    };
 }