Update .travis.yml

Author: nfons

.travis.yml

@@ -17,16 +17,24 @@ jobs:
     - stage: deploy
       install: skip
       name: "Deploying docker image"
-      script:
-        - echo "Logging into Docker"
-        - docker login -u=$DOCKER_USER -p=$DOCKER_PASS quay.io
-        - docker build -t deckhand .
-        - docker tag deckhand quay.io/nfons/deckhand:$TRAVIS_BRANCH
-        - docker push quay.io/nfons/deckhand:$TRAVIS_BRANCH
+      script: skip
+      deploy:
+        provider: script
+        script:
+          - echo "Logging into Docker"
+          - docker login -u=$DOCKER_USER -p=$DOCKER_PASS quay.io
+          - docker build -t deckhand .
+          - docker tag deckhand quay.io/nfons/deckhand:$TRAVIS_BRANCH
+          - docker push quay.io/nfons/deckhand:$TRAVIS_BRANCH
+        skip_cleanup: true
+        on:
+          tags: true
+          branch: master
+          
+       
 
 stages:
   - install
   - build
   - name: deploy
-    if: branch == master