fix rstudio

Signed-off-by: Jessica Frazelle <acidburn@docker.com>

rstudio/Dockerfile

@@ -19,6 +19,8 @@ ADD https://download1.rstudio.org/rstudio-0.99.484-amd64.deb /src/rstudio.deb
 RUN apt-get update && apt-get install -y \
 	ca-certificates \
 	fcitx-frontend-qt5 \
+	fcitx-modules \
+	fcitx-module-dbus \
 	libedit2 \
 	libgl1-mesa-dri \
 	libgl1-mesa-glx \
@@ -27,6 +29,8 @@ RUN apt-get update && apt-get install -y \
 	libjpeg-dev \
 	libjpeg62-turbo \
 	libjpeg62-turbo-dev \
+	libpresage1 \
+	libpresage-data \
 	libqt5core5a \
 	libqt5dbus5 \
 	libqt5gui5 \