docker container for casparcg testing

Dockerfile

# run "xhost local:root" on host machine

FROM debian:latest
RUN apt-get update
RUN DEBIAN_FRONTEND=noninteractive apt install -y xorg v4l2ucp libgl1 libraw1394-11 libavc1394-0 libiec61883-0 libgtkextra-dev libnss3 libgconf2-4 vnc4server fluxbox libasound2 vlc
RUN apt -y purge libturbojpeg0

ADD http://de.archive.ubuntu.com/ubuntu/pool/main/libj/libjpeg-turbo/libjpeg-turbo8_1.3.0-0ubuntu2_amd64.deb /deb/libjpeg-turbo8.deb
ADD http://security.ubuntu.com/ubuntu/pool/main/libg/libgcrypt11/libgcrypt11_1.5.3-2ubuntu4.5_amd64.deb /deb/libgcrypt11.deb
RUN dpkg -i /deb/*.deb

VOLUME /stuff
VOLUME /dev/dri
VOLUME /tmp/.X11-unix
WORKDIR /stuff

test.py

#!/usr/bin/env python3

import socket
import time
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect(("172.17.0.2", 5250))

channels = {
    1: '"http://cdn.c3voc.de/s1_native_sd.webm"',
    2: '"http://cdn.c3voc.de/s2_native_sd.webm"',
    3: '"http://cdn.c3voc.de/s3_native_sd.webm"',
    4: '"http://cdn.c3voc.de/s4_native_sd.webm"',
}

presets = {
    1: {
        1: {'visible': True, 'position': (0.05, 0.05), 'size': (0.75, 0.75)},
        2: {'visible': True, 'position': (0.70, 0.70), 'size': (0.25, 0.25)}
    },
    2: {
        1: {'visible': True, 'position': (0.0, 0.0), 'size': (1, 1)},
    },
    3: {
        2: {'visible': True, 'position': (0.0, 0.0), 'size': (1, 1)},
    },
    4: {
        1: {'visible': True, 'position': (0.0, 0.0), 'size': (0.5, 0.5)},
        2: {'visible': True, 'position': (0.0, 0.5), 'size': (0.5, 0.5)},
        3: {'visible': True, 'position': (0.5, 0.0), 'size': (0.5, 0.5)},
        4: {'visible': True, 'position': (0.5, 0.5), 'size': (0.5, 0.5)},
    },
}


sock.send(b'PLAY 1-0 "BGLOOP" CUT 1 Linear RIGHT LOOP\r\n')

for channel_id, channel in channels.items():
    sock.send(b"PLAY 1-%d" % channel_id + channel.encode())
    time.sleep(1)
    sock.send(b'MIXER 1-%d VOLUME 0\r\n' % channel_id)
    sock.send(b"\r\n")
    print(channel)

sock.send(b"PLAY 2-1 route://1\r\n")

def load_scene(scene_id):
    if not scene_id in presets:
        return

    commands = ''
    for channel_id, channel in channels.items():
        if channel_id in presets[scene_id]:
            scene = presets[scene_id]
            print(scene)
            commands += 'MIXER 1-%d OPACITY 1\r\n' % channel_id
            commands += 'MIXER 1-%d FILL %.2f %.2f %.2f %.2f\r\n' % ((channel_id, ) + scene[channel_id]['position'] + scene[channel_id]['size'])
        else:
            commands += 'MIXER 1-%d OPACITY 0\r\n' % channel_id
    sock.send(commands.encode())

load_scene(1)

while True:
    cmd = input().strip()

    if cmd == 'p':
        sock.send(b'PLAY 2-2 IRISH-COFFEE\r\n')
        sock.send(b'PLAY 2-3 PAUSE\r\n')
        sock.send(b'MIXER 2-1 VOLUME 0\r\n')
        sock.send(b'MIXER 2-2 VOLUME 1\r\n')
    elif cmd == 'P':
        sock.send(b'STOP 2-3\r\n')
        sock.send(b'MIXER 2-2 VOLUME 0\r\n')
        sock.send(b'MIXER 2-1 VOLUME 1\r\n')
    else:
        try:
            scene_id = int(cmd)
        except:
            continue

        load_scene(scene_id)

any success with casperCG and docker?
from what i see, casperCG isn't included in your container, yet. right?