安装docker-ce失败，有大量未满足的依赖

Question

按照官方指南到最后一步执行sudo apt-get install docker-ce时，总是报出下列问题。
系统是Ubuntu 16.04 Xenial
docker-ce-cli和contianerd都能安装成功。
麻烦大侠指点下。

The following packages have unmet dependencies:
 libcairo2 : Depends: libfontconfig1 (>= 2.9.0) but it is not going to be installed
 libgnome-desktop-3-12 : Depends: libgtk-3-0 (>= 3.9.10) but it is not going to be installed
 liboxideqt-qmlplugin : Depends: liboxideqtcore0 (= 1.21.5-0ubuntu0.16.04.1) but it is not going to be installed
                        Depends: liboxideqtquick0 (= 1.21.5-0ubuntu0.16.04.1) but it is not going to be installed
                        Depends: libqt5quick5 (>= 5.0.2) but it is not going to be installed or
                                 libqt5quick5-gles (>= 5.0.2) but it is not going to be installed
 libpango-1.0-0 : Depends: fontconfig (>= 2.1.91)
 libqmenumodel0 : Depends: libqt5gui5 (>= 5.0.2) but it is not going to be installed or
                           libqt5gui5-gles (>= 5.0.2) but it is not going to be installed
 libqt5multimedia5 : Depends: libqt5gui5 (>= 5.2.0) but it is not going to be installed or
                              libqt5gui5-gles (>= 5.2.0) but it is not going to be installed
 libqt5multimedia5-plugins : Depends: libqgsttools-p1 (>= 5.5.1) but it is not going to be installed
                             Depends: libqt5gui5 (>= 5.0.2) but it is not going to be installed or
                                      libqt5gui5-gles (>= 5.0.2) but it is not going to be installed
 libqt5multimediaquick-p5 : Depends: libqt5gui5 (>= 5.0.2) but it is not going to be installed or
                                     libqt5gui5-gles (>= 5.0.2) but it is not going to be installed
                            Depends: libqt5quick5 (>= 5.4.0) but it is not going to be installed or
                                     libqt5quick5-gles (>= 5.4.0) but it is not going to be installed
 libqt5widgets5 : Depends: libqt5gui5 (>= 5.5.0) but it is not going to be installed or
                           libqt5gui5-gles (>= 5.5.0) but it is not going to be installed
 libubuntugestures5 : Depends: libqt5gui5 (>= 5.0.2) but it is not going to be installed or
                               libqt5gui5-gles (>= 5.0.2) but it is not going to be installed
                      Depends: libqt5quick5 (>= 5.0.2) but it is not going to be installed or
                               libqt5quick5-gles (>= 5.0.2) but it is not going to be installed
 libubuntutoolkit5 : Depends: libqt5gui5 (>= 5.0.2) but it is not going to be installed or
                              libqt5gui5-gles (>= 5.0.2) but it is not going to be installed
 network-manager-pptp : Depends: ppp (< 2.4.7-2~) but it is not going to be installed
                        Depends: ppp (>= 2.4.7-1+~) but it is not going to be installed
                        Depends: pptp-linux but it is not going to be installed
 qml-module-io-thp-pyotherside : Depends: libqt5gui5 (>= 5.0.2) but it is not going to be installed or
                                          libqt5gui5-gles (>= 5.0.2) but it is not going to be installed
                                 Depends: libqt5quick5 (>= 5.0.2) but it is not going to be installed or
                                          libqt5quick5-gles (>= 5.0.2) but it is not going to be installed
 qml-module-qtmultimedia : Depends: libqt5gui5 (>= 5.0.2) but it is not going to be installed or
                                    libqt5gui5-gles (>= 5.0.2) but it is not going to be installed
                           Depends: libqt5quick5 (>= 5.0.2) but it is not going to be installed or
                                    libqt5quick5-gles (>= 5.0.2) but it is not going to be installed
 qml-module-qtquick-layouts : Depends: libqt5gui5 (>= 5.5.0) but it is not going to be installed or
                                       libqt5gui5-gles (>= 5.5.0) but it is not going to be installed
                              Depends: libqt5quick5 (>= 5.2.0) but it is not going to be installed or
                                       libqt5quick5-gles (>= 5.2.0) but it is not going to be installed
 qml-module-qtquick-window2 : Depends: libqt5quick5 (>= 5.0.2) but it is not going to be installed or
                                       libqt5quick5-gles (>= 5.0.2) but it is not going to be installed
 qml-module-qtquick2 : Depends: libqt5quick5 (>= 5.4.1) but it is not going to be installed or
                                libqt5quick5-gles (>= 5.4.1) but it is not going to be installed
 qml-module-ubuntu-layouts : Depends: libqt5quick5 (>= 5.0.2) but it is not going to be installed or
                                      libqt5quick5-gles (>= 5.0.2) but it is not going to be installed
 qml-module-ubuntu-performancemetrics : Depends: libqt5gui5 (>= 5.0.2) but it is not going to be installed or
                                                 libqt5gui5-gles (>= 5.0.2) but it is not going to be installed
                                        Depends: libqt5quick5 (>= 5.0.2) but it is not going to be installed or
                                                 libqt5quick5-gles (>= 5.0.2) but it is not going to be installed
 qtdeclarative5-ubuntu-content1 : Depends: libcontent-hub0 but it is not going to be installed
                                  Depends: libqt5gui5 (>= 5.0.2) but it is not going to be installed or
                                           libqt5gui5-gles (>= 5.0.2) but it is not going to be installed
                                  Depends: libqt5quick5 (>= 5.0.2) but it is not going to be installed or
                                           libqt5quick5-gles (>= 5.0.2) but it is not going to be installed
 qtdeclarative5-ubuntu-ui-toolkit-plugin : Depends: qml-module-ubuntu-components
                                           Depends: qml-module-ubuntu-test but it is not going to be installed
 ubuntu-system-settings : Depends: libqt5gui5 (>= 5.0.2) but it is not going to be installed or
                                   libqt5gui5-gles (>= 5.0.2) but it is not going to be installed
                          Depends: libqt5quick5 (>= 5.0.2) but it is not going to be installed or
                                   libqt5quick5-gles (>= 5.0.2) but it is not going to be installed
                          Recommends: ubuntu-system-settings-online-accounts but it is not going to be installed
 unity-asset-pool : Depends: adwaita-icon-theme but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.