Try to fix /tmp problem

.travis.yml

@@ -1,13 +1,13 @@
 os: linux
 
 services:
-  - docker 
+  - docker
 
 script:
-  - docker build --build-arg BUILD_DATE="$(date --rfc-3339=seconds | sed 's/ /T/')" --build-arg VCS_REF="$(echo $TRAVIS_COMMIT | cut -c -7)" --tag otherguy/dropbox:latest .
+  - docker build --build-arg VERSION="${TRAVIS_BRANCH}" --build-arg BUILD_DATE="$(date --rfc-3339=seconds | sed 's/ /T/')" --build-arg VCS_REF="$(echo $TRAVIS_COMMIT | cut -c -7)" --tag otherguy/dropbox:latest .
 
 before_deploy:
-  - echo "${DOCKERHUB_TOKEN}" | docker login -u "${DOCKERHUB_USERNAME}" --password-stdin && echo "${GITHUB_TOKEN}" | docker login docker.pkg.github.com -u "${GITHUB_USERNAME}" --password-stdin 
+  - echo "${DOCKERHUB_TOKEN}" | docker login -u "${DOCKERHUB_USERNAME}" --password-stdin && echo "${GITHUB_TOKEN}" | docker login docker.pkg.github.com -u "${GITHUB_USERNAME}" --password-stdin
 
 deploy:
   - provider: script

Dockerfile

@@ -65,6 +65,7 @@ ARG BUILD_DATE=""
 # http://label-schema.org/rc1/
 LABEL org.label-schema.schema-version "1.0"
 LABEL org.label-schema.name           "Dropbox"
+LABEL org.label-schema.version        "${VERSION}"
 LABEL org.label-schema.build-date     "${BUILD_DATE}"
 LABEL org.label-schema.description    "Standalone Dropbox client"
 LABEL org.label-schema.vcs-url        "https://github.com/otherguy/docker-dropbox"

docker-entrypoint.sh

@@ -105,6 +105,6 @@ sleep 5
 # Dropbox likes to restart itself. In that case, the container will exit!
 while kill -0 ${DROPBOX_PID} 2> /dev/null; do
   [ -d "/proc/${DROPBOX_PID}" ] && [ -f "/opt/dropbox/.dropbox/info.json" ] && gosu dropbox dropbox status
-  /usr/bin/find /tmp -maxdepth 1 -type d -mtime +1 -exec rm -rf {} \;
+  /usr/bin/find /tmp/ -maxdepth 1 -type d -mtime +1 ! -path /tmp/ -exec rm -rf {} \;
   /bin/sleep ${POLLING_INTERVAL}
 done