Is possible to install CShell in Docker

[araksik]

Is it even possible to install CShell (cshell_install.sh) inside Docker on build stage?

My Dockerfile currently looks like this, SNX has been installed without any issues, but CShell installation gives errors, so is it even possible to install it like this:

FROM scottyhardy/docker-remote-desktop:ubuntu-20.04

# Install SNX required dependencies
RUN dpkg --add-architecture i386 \
    && apt-get update \
    && DEBIAN_FRONTEND="noninteractive" apt-get install -y --no-install-recommends \
        libpam0g:i386 \
        libx11-6:i386 \
        libstdc++6:i386 \
        libstdc++5:i386 \
        libnss3-tools \
        xterm \
        curl \
        default-jdk \
    && rm -rf /var/lib/apt/lists/*

# Install SNX
ADD scripts/snx_install.sh /root
RUN bash -x ./root/snx_install.sh

# Install CShell
#ADD scripts/cshell_install.sh /root
#RUN bash -x ./root/cshell_install.sh -s

Thank you!

[PhoneBoy]

Pretty sure this is not a scenario that has been QAed.
What are the precise errors that occur?

[araksik]

Error from Docker build:

 > [6/6] RUN bash -x ./root/cshell_install.sh:
#10 0.176 + ARCHIVE_OFFSET=884
#10 0.176 + FULL_PRODUCT_NAME='Check Point Mobile Access Portal Agent'
#10 0.176 + SHORT_PRODUCT_NAME='Mobile Access Portal Agent'
#10 0.176 + INSTALL_DIR=/usr/bin/cshell
#10 0.176 + INSTALL_CERT_DIR=/usr/bin/cshell/cert
#10 0.176 + BAD_CERT_FILE=/usr/bin/cshell/cert/.BadCertificate
#10 0.176 + PATH_TO_JAR=/usr/bin/cshell/CShell.jar
#10 0.177 + AUTOSTART_DIR=
#10 0.177 + USER_NAME=
#10 0.177 + CERT_DIR=/etc/ssl/certs
#10 0.177 + CERT_NAME=CShell_Certificate
#10 0.177 + LOGS_DIR=/var/log/cshell
#10 0.178 + trap cleanupOnTrap 2
#10 0.178 + trap cleanupOnTrap 3
#10 0.178 + trap cleanupOnTrap 13
#10 0.178 + trap cleanupOnTrap 15
#10 0.178 + CLEAN_ALL_ON_TRAP=0
#10 0.179 ++ GetUserName
#10 0.179 +++ who
#10 0.179 +++ head -n 1
#10 0.180 +++ awk '{print $1}'
#10 0.181 ++ user_name=
#10 0.181 ++ echo
#10 0.181 + USER_NAME=
#10 0.182 ++ xhost
#10 0.182 ++ grep -Fi localuser:
#10 0.183 xhost:  unable to open display ""
#10 0.184 + line=
#10 0.184 + '[' -z '' ']'
#10 0.184 + xhost +si:localuser:
#10 0.185 + res=1
#10 0.185 + '[' 1 '!=' 0 ']'
#10 0.185 + echo 'Please add "root" and "" to X11 access list'
#10 0.185 + exit 1
#10 0.185 Please add "root" and "" to X11 access list
------
executor failed running [/bin/sh -c bash -x ./root/cshell_install.sh]: exit code: 1

[PhoneBoy · Accepted solution]

xhost is a CLI command used to control access to the underlying X windows server on Linux systems.
Since cshell ultimately displays a Window, the xhost command is run to ensure it can do so.
This command is not returning the expected result when run inside your Docker container.