Read coreApp assets directly from package

packages/core/apps/core-apps-server-internal/BUILD.bazel

@@ -8,13 +8,6 @@ PKG_REQUIRE_NAME = "@kbn/core-apps-server-internal"
 SOURCE_FILES = glob(
   [
     "**/*.ts",
-    "src/**/*.css",
-    "src/**/*.ttf",
-    "src/**/*.woff",
-    "src/**/*.woff2",
-    "src/**/*.ico",
-    "src/**/*.png",
-    "src/**/*.svg",
   ],
   exclude = [
     "**/*.config.js",
@@ -38,8 +31,16 @@ filegroup(
   srcs = SRCS,
 )
 
+ASSETS = glob(["assets/**/*"])
+
+filegroup(
+  name = "assets",
+  srcs = ASSETS,
+)
+
 NPM_MODULE_EXTRA_FILES = [
   "package.json",
+  ":assets"
 ]
 
 RUNTIME_DEPS = [

packages/core/apps/core-apps-server-internal/src/core_app.ts

@@ -6,7 +6,6 @@
  * Side Public License, v 1.
  */
 
-import Path from 'path';
 import { stringify } from 'querystring';
 import { Env } from '@kbn/config';
 import { schema } from '@kbn/config-schema';
@@ -202,8 +201,13 @@ export class CoreAppsService {
     });
   }
 
+  // After the package is built and bootstrap extracts files to bazel-bin,
+  // assets are exposed at the root of the package and in the package's node_modules dir
   private registerStaticDirs(core: InternalCoreSetup | InternalCorePreboot) {
-    core.http.registerStaticDir('/ui/{path*}', Path.resolve(__dirname, './assets'));
+    core.http.registerStaticDir(
+      '/ui/{path*}',
+      fromRoot('node_modules/@kbn/core-apps-server-internal/assets')
+    );
 
     core.http.registerStaticDir(
       '/node_modules/@kbn/ui-framework/dist/{path*}',