fix: semantic-release in travis-ci

.travis.yml

@@ -3,7 +3,7 @@ language: node_js
 node_js:
   - "8"
 
-sudo: false
+sudo: required
 dist: trusty
 
 addons:
@@ -12,6 +12,10 @@ addons:
 cache:
   yarn: true
 
+before_script:
+  - sudo chmod 4755 /opt/google/chrome/chrome-sandbox
+  - sudo chown root /opt/google/chrome/chrome-sandbox
+
 env:
   global:
     # See https://git.io/vdao3 for details.
@@ -50,6 +54,12 @@ script:
 # after_script:
 # - ember sauce:disconnect
 
+after_success:
+  - npm run travis-deploy-once "npm run semantic-release"
+branches:
+  except:
+    - /^v\d+\.\d+\.\d+$/
+
 deploy:
   provider: npm
   email: [email protected]

package.json

@@ -8,7 +8,8 @@
     "start": "ember serve",
     "test": "ember test",
     "test:all": "ember try:each",
-    "semantic-release": "semantic-release"
+    "semantic-release": "semantic-release",
+    "travis-deploy-once": "travis-deploy-once"
   },
   "engines": {
     "node": "6.* || 8.* || >= 10.*"
@@ -41,7 +42,8 @@
     "eslint-plugin-node": "^6.0.1",
     "loader.js": "^4.2.3",
     "qunit-dom": "^0.6.2",
-    "semantic-release": "^15.9.9"
+    "semantic-release": "^15.9.9",
+    "travis-deploy-once": "^5.0.2"
   },
   "keywords": [
     "ember-addon",