fix: vnc crash (issue #88)
fix: vnc crash (issue #88)

upgrade x11vnc >= 0.9.13-6

fcwu/docker-ubuntu-vnc-desktop,fcwu/docker-ubuntu-vnc-desktop,alexlib/docker-ubuntu-vnc-desktop,alexlib/docker-ubuntu-vnc-desktop,alexlib/docker-ubuntu-vnc-desktop,alexlib/docker-ubuntu-vnc-desktop,alexlib/docker-ubuntu-vnc-desktop,alexlib/docker-ubuntu-vnc-desktop,fcwu/docker-ubuntu-vnc-desktop,fcwu/docker-ubuntu-vnc-desktop,alexlib/docker-ubuntu-vnc-desktop