Containerfile

FROM quay.io/centos-boot/centos-tier-1-dev:stream9
RUN rpm-ostree install gdm firefox gnome-kiosk-script-session plymouth-system-theme
RUN rm -rf /var/lib/gdm/.config/pulse/default.pa && rm -rf /var/lib/xkb/README.compiled
RUN echo -e "\
#Enable autologin for the user core \n\
# GDM configuration storage \n\
[daemon] \n\
# Uncomment the line below to force the login screen to use Xorg \n\
#WaylandEnable=false \n\
AutomaticLogin=core \n\
AutomaticLoginEnable=True \n\
[security] \n\
[xdmcp] \n\
[chooser] \n\
[debug] \n\
# Uncomment the line below to turn on debugging \n\
Enable=true \n\
" > /etc/gdm/custom.conf
RUN echo -e "\
u     core    1042            "kiosk user" /var/lib/corehome /bin/sh \n\
" > /usr/lib/sysusers.d/core.conf
RUN echo -e "\
#!/bin/sh \n\
while true; do \n\
    firefox --profile /var/lib/corehome -kiosk https://time.gov \n\
done \n\
" > /usr/lib/gnome-kiosk-script
RUN chown 1042:1042 /usr/lib/gnome-kiosk-script
RUN echo -e "\
[User] \n\
Session=gnome-kiosk-script \n\
SystemAccount=false \n\
" > /usr/lib/core-gdm
RUN chmod 0600 /usr/lib/core-gdm
RUN echo -e "\
C /var/lib/AccountsService/users/core - - - - /usr/lib/core-gdm \n\
d /var/lib/corehome - 1042 1042 - - \n\
d /var/lib/corehome/.local - 1042 1042 - - \n\
d /var/lib/corehome/.local/bin - 1042 1042 - - \n\
C /var/lib/corehome/.local/bin/gnome-kiosk-script - 1042 1042 - /usr/lib/gnome-kiosk-script \n\
" > /usr/lib/tmpfiles.d/core-kiosk.conf
RUN systemctl set-default graphical.target && ostree container commit