Run GUI application on Docker container (Japanese input)

Purpose

Run the GUI application on Docker with Japanese input possible. Create based on the Docker image in the state where Japanese input is not possible. Create a container image by referring to Running GUI application on Docker container.

The following is not described.

--Introduce docker, docker-compose

Create a container that can input Japanese

Dockerfile

FROM sabocla6/ubuntu_ui

# ***********************************************
# install packages for xrdp, and do setting
# ***********************************************
RUN apt-get update && \
    DEBIAN_FRONTEND=noninteractive apt-get install -y \
    language-pack-ja-base language-pack-ja fonts-noto-cjk fcitx-mozc \
    && im-config -n fcitx

#Install GUI application for operation check
RUN apt-get update \
    && apt-get install -y gedit

ENV GTK_IM_MODULE=xim \
    QT_IM_MODULE=fcitx \
    XMODIFIERS=@im=fcitx \
    DefalutIMModule=fcitx

RUN locale-gen ja_JP.UTF-8  
ENV LANG=ja_JP.UTF-8 \
    LC_ALL=ja_JP.UTF-8

Move to the directory where Dockerfile is stored and execute the following command.

Build Docker image

sudo docker build ./ -t sabocla6/ubuntu_ui_jp

Confirmation of starting the text editor

Confirmation of starting the text editor

sudo docker run -v $HOME/.Xauthority:/root/.Xauthority -e DISPLAY=$DISPLAY -it --rm --network=host sabocla6/ubuntu_ui_jp gedit

If the text editor starts and you can input Japanese normally, you are done.

Related article

Run VS Code on Docker Run GUI application on Docker container (https://qiita.com/SabotageCLA6/items/6e6657284e1fba2d5c60)

Reference article

How to input Japanese with the app in the Docker container