Build core as usual and pretheme after build

.travis.yml

@@ -110,6 +110,7 @@ jobs:
           script:
             - ./scripts/travis/build/bumpversion.sh || travis_terminate 1
             - nx affected:build $NX_CALCULATION_FLAGS --prod --exclude="demoshell"
+            - nx affected $NX_CALCULATION_FLAGS --target=pretheme
 
           workspaces:
             create:

angular.json

@@ -300,7 +300,7 @@
       "sourceRoot": "lib/core/src",
       "prefix": "adf",
       "architect": {
-        "build-lib": {
+        "build": {
           "builder": "@angular-devkit/build-angular:ng-packagr",
           "options": {
             "tsConfig": "lib/core/tsconfig.lib.json",

lib/core/package.json

@@ -11,8 +11,6 @@
     "url": "https://github.com/Alfresco/alfresco-ng2-components/issues"
   },
   "scripts": {
-    "build": "npx nx run core:build-lib",
-    "postbuild": "npx nx run core:pretheme"
   },
   "exports": {
     "./theming": {