fix(build-main): npm run install:starter is now working well on eve…

…ry platform (MacOS, Windows, Linux)

ISSUES CLOSED: #1617

package.json

@@ -42,6 +42,7 @@
     "commitizen": "^4.0.0",
     "conventional-changelog-cli": "^2.0.31",
     "core-js": "^3.6.4",
+    "cross-env": "^7.0.0",
     "cz-customizable": "^6.0.0",
     "hammerjs": "^2.0.8",
     "husky": "^4.2.1",
@@ -125,7 +126,7 @@
     "install:stark-testing": "cd packages/stark-testing && npm install && cd ../..",
     "install:stark-ui": "cd packages/stark-ui && npm install && cd ../..",
     "install:showcase": "cd showcase && npm install && cd ..",
-    "install:starter": "cd starter && export HUSKY_SKIP_INSTALL=1 && npm install && cd ..",
+    "install:starter": "cd starter && cross-env HUSKY_SKIP_INSTALL=1 npm install && cd ..",
     "install:ci:all": "npm run install:ci:stark-build && npm run install:ci:stark-testing && npm run install:ci:stark-core && npm run install:ci:stark-ui && npm run install:ci:stark-rbac && npm run build:trace && npm run install:starter && npm run install:ci:showcase",
     "install:ci:stark-build": "cd packages/stark-build && npm ci && cd ../..",
     "install:ci:stark-core": "cd packages/stark-core && npm ci && cd ../..",