use common docker publish script

Signed-off-by: Erin Schnabel <schnabel@us.ibm.com>

.travis.yml

@@ -13,15 +13,8 @@ before_install:
 script:
 - ./gradlew build
 after_success:
-- echo "TRAVIS_BRANCH='$TRAVIS_BRANCH'" \
-  ;if [ "$TRAVIS_BRANCH" == "master" ]; then
-     echo "Building and Pushing new image" \
-     && docker login -u="${DOCKER_USERNAME}" -p="${DOCKER_PASSWORD}" && echo "Login ok" \
-     && docker build -t ${DOCKER_REPO}/${DOCKER_IMAGE} ${DOCKER_BUILDDIR} && echo "Build complete" \
-     && docker push ${DOCKER_REPO}/${DOCKER_IMAGE} && echo "Push complete"
-  ;else
-     echo "Not master branch, skipping docker"
-  ;fi
+- echo "TRAVIS_BRANCH='$TRAVIS_BRANCH'"
+- bash <(curl -s https://raw.githubusercontent.com/gameontext/gameon/master/images/dockerhub.sh)
 notifications:
   slack:
     secure: 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