gitlab-pages eat up all disk space

When upgrade to gitlab-10.7.2-ce.0 (docker version), gitlab-pages eat up all my disk space.

gitlab-pages will retry again per second after chroot failed, which will create a new /tmp/gitlab-pages-xxx directories.

2018-05-01_00:36:24.02052 time="2018-05-01T00:36:24Z" level=info msg="GitLab Pages Daemon" revision=5405831 version=dev
2018-05-01_00:36:24.02055 time="2018-05-01T00:36:24Z" level=info msg="URL: https://gitlab.com/gitlab-org/gitlab-pages"
2018-05-01_00:36:24.02070 time="2018-05-01T00:36:24Z" level=info msg="running the daemon as unprivileged user" gid=998 uid=998
2018-05-01_00:36:24.02476 time="2018-05-01T00:36:24Z" level=info msg="chroot failed" error="Failed to bind mount /var/opt/gitlab/gitlab-rails/shared/pages on /tmp/gitlab-pages-1525134984020706857/pages. operation not permitted"
2018-05-01_00:36:24.02478 time="2018-05-01T00:36:24Z" level=fatal error="Failed to bind mount /var/opt/gitlab/gitlab-rails/shared/pages on /tmp/gitlab-pages-1525134984020706857/pages. operation not permitted"
2018-05-01_00:36:25.03011 time="2018-05-01T00:36:25Z" level=info msg="GitLab Pages Daemon" revision=5405831 version=dev
2018-05-01_00:36:25.03013 time="2018-05-01T00:36:25Z" level=info msg="URL: https://gitlab.com/gitlab-org/gitlab-pages"
2018-05-01_00:36:25.03030 time="2018-05-01T00:36:25Z" level=info msg="running the daemon as unprivileged user" gid=998 uid=998
2018-05-01_00:36:25.03424 time="2018-05-01T00:36:25Z" level=info msg="chroot failed" error="Failed to bind mount /var/opt/gitlab/gitlab-rails/shared/pages on /tmp/gitlab-pages-1525134985030310150/pages. operation not permitted"
2018-05-01_00:36:25.03426 time="2018-05-01T00:36:25Z" level=fatal error="Failed to bind mount /var/opt/gitlab/gitlab-rails/shared/pages on /tmp/gitlab-pages-1525134985030310150/pages. operation not permitted"

As a result, disk space is eat up:

2018-05-01_15:55:27.12728 time="2018-05-01T15:55:27Z" level=info msg="GitLab Pages Daemon" revision=5405831 version=dev
2018-05-01_15:55:27.12732 time="2018-05-01T15:55:27Z" level=info msg="URL: https://gitlab.com/gitlab-org/gitlab-pages"
2018-05-01_15:55:27.12800 time="2018-05-01T15:55:27Z" level=info msg="running the daemon as unprivileged user" gid=998 uid=998
2018-05-01_15:55:27.13249 time="2018-05-01T15:55:27Z" level=info msg="chroot failed" error="Can't copy \"/opt/gitlab/embedded/bin/gitlab-pages\" -> \"/tmp/gitlab-pages-1525190127128009583/gitlab-pages\". write /tmp/gitlab-pages-1525190127128009583/gitlab-pages: no space left on device"
2018-05-01_15:55:27.13253 time="2018-05-01T15:55:27Z" level=fatal error="Can't copy \"/opt/gitlab/embedded/bin/gitlab-pages\" -> \"/tmp/gitlab-pages-1525190127128009583/gitlab-pages\". write /tmp/gitlab-pages-1525190127128009583/gitlab-pages: no space left on device"
2018-05-01_15:55:28.15727 time="2018-05-01T15:55:28Z" level=info msg="GitLab Pages Daemon" revision=5405831 version=dev
2018-05-01_15:55:28.15728 time="2018-05-01T15:55:28Z" level=info msg="URL: https://gitlab.com/gitlab-org/gitlab-pages"
2018-05-01_15:55:28.15743 time="2018-05-01T15:55:28Z" level=info msg="running the daemon as unprivileged user" gid=998 uid=998
2018-05-01_15:55:28.16024 time="2018-05-01T15:55:28Z" level=info msg="chroot failed" error="Can't copy \"/opt/gitlab/embedded/bin/gitlab-pages\" -> \"/tmp/gitlab-pages-1525190128157432926/gitlab-pages\". write /tmp/gitlab-pages-1525190128157432926/gitlab-pages: no space left on device"
2018-05-01_15:55:28.16025 time="2018-05-01T15:55:28Z" level=fatal error="Can't copy \"/opt/gitlab/embedded/bin/gitlab-pages\" -> \"/tmp/gitlab-pages-1525190128157432926/gitlab-pages\". write /tmp/gitlab-pages-1525190128157432926/gitlab-pages: no space left on device"

gitlab-pages.tar.gz