Add skip cleanup to docker releases

.travis.yml

@@ -57,6 +57,7 @@ deploy:
       branch: develop
   # docker image build for develop release
   - provider: script
+    skip_cleanup: true
     script: bash ./docker/ci/x86_64/docker_push.sh development-x86_64
     on:
       repo: stashapp/stash
@@ -86,6 +87,7 @@ deploy:
       condition: $TRAVIS_TAG != latest_develop
   # docker image build for master release
   - provider: script
+    skip_cleanup: true
     script: bash ./docker/ci/x86_64/docker_push.sh latest
     on:
       repo: stashapp/stash