VNC-related Docker-Container cant get installed ? Help needed

version: '3'
services:
jdownloader:
image: jlesage/jdownloader-2
container_name: jdownloader
restart: always
ports:
- "32793:5800"
environment:
- DISPLAY_WIDTH=1280
- DISPLAY_HEIGHT=720
- TZ=Europe/Berlin
volumes:
- "./volumes/config:/config"
- /mnt/Download:/output

> Warning:          Could not resolve keysym XF86Macro28
> Warning:          Could not resolve keysym XF86Macro29
> Warning:          Could not resolve keysym XF86Macro30
> Warning:          Could not resolve keysym XF86MacroRecordStart
> Warning:          Could not resolve keysym XF86MacroRecordStop
> Warning:          Could not resolve keysym XF86MacroPresetCycle
> Warning:          Could not resolve keysym XF86MacroPreset1
> Warning:          Could not resolve keysym XF86MacroPreset2
> Warning:          Could not resolve keysym XF86MacroPreset3
> Warning:          Could not resolve keysym XF86KbdLcdMenu1
> Warning:          Could not resolve keysym XF86KbdLcdMenu2
> Warning:          Could not resolve keysym XF86KbdLcdMenu3
> Warning:          Could not resolve keysym XF86KbdLcdMenu4
> Warning:          Could not resolve keysym XF86KbdLcdMenu5
Errors from xkbcomp are not fatal to the X server
19/10/2022 10:20:02 Using X display :0
19/10/2022 10:20:02 rootwin: 0x42 reswin: 0x200001 dpy: 0x18dc9040
19/10/2022 10:20:02 
19/10/2022 10:20:02 ------------------ USEFUL INFORMATION ------------------
19/10/2022 10:20:02 X DAMAGE available on display, using it for polling hints.
19/10/2022 10:20:02   To disable this behavior use: '-noxdamage'
19/10/2022 10:20:02 
19/10/2022 10:20:02   Most compositing window managers like 'compiz' or 'beryl'
19/10/2022 10:20:02   cause X DAMAGE to fail, and so you may not see any screen
19/10/2022 10:20:02   updates via VNC.  Either disable 'compiz' (recommended) or
19/10/2022 10:20:02   supply the x11vnc '-noxdamage' command line option.
19/10/2022 10:20:02 X COMPOSITE available on display, using it for window polling.
19/10/2022 10:20:02   To disable this behavior use: '-noxcomposite'
19/10/2022 10:20:02 
19/10/2022 10:20:02 Wireframing: -wireframe mode is in effect for window moves.
19/10/2022 10:20:02   If this yields undesired behavior (poor response, painting
19/10/2022 10:20:02   errors, etc) it may be disabled:
19/10/2022 10:20:02    - use '-nowf' to disable wireframing completely.
19/10/2022 10:20:02    - use '-nowcr' to disable the Copy Rectangle after the
19/10/2022 10:20:02      moved window is released in the new position.
19/10/2022 10:20:02   Also see the -help entry for tuning parameters.
19/10/2022 10:20:02   You can press 3 Alt_L's (Left "Alt" key) in a row to 
19/10/2022 10:20:02   repaint the screen, also see the -fixscreen option for
19/10/2022 10:20:02   periodic repaints.
19/10/2022 10:20:02 GrabServer control via XTEST.
19/10/2022 10:20:02 
19/10/2022 10:20:02 Scroll Detection: -scrollcopyrect mode is in effect to
19/10/2022 10:20:02   use RECORD extension to try to detect scrolling windows
19/10/2022 10:20:02   (induced by either user keystroke or mouse input).
19/10/2022 10:20:02   If this yields undesired behavior (poor response, painting
19/10/2022 10:20:02   errors, etc) it may be disabled via: '-noscr'
19/10/2022 10:20:02   Also see the -help entry for tuning parameters.
19/10/2022 10:20:02   You can press 3 Alt_L's (Left "Alt" key) in a row to 
19/10/2022 10:20:02   repaint the screen, also see the -fixscreen option for
19/10/2022 10:20:02   periodic repaints.
19/10/2022 10:20:02 
19/10/2022 10:20:02 XKEYBOARD: number of keysyms per keycode 7 is greater
19/10/2022 10:20:02   than 4 and 51 keysyms are mapped above 4.
19/10/2022 10:20:02   Automatically switching to -xkb mode.
19/10/2022 10:20:02   If this makes the key mapping worse you can
19/10/2022 10:20:02   disable it with the "-noxkb" option.
19/10/2022 10:20:02   Also, remember "-remap DEAD" for accenting characters.
19/10/2022 10:20:02 
19/10/2022 10:20:02 X FBPM extension not supported.
Xlib:  extension "DPMS" missing on display ":0".
19/10/2022 10:20:02 X display is not capable of DPMS.
19/10/2022 10:20:02 --------------------------------------------------------
19/10/2022 10:20:02 
19/10/2022 10:20:02 Default visual ID: 0x21
19/10/2022 10:20:02 Read initial data from X display into framebuffer.
19/10/2022 10:20:02 initialize_screen: fb_depth/fb_bpp/fb_Bpl 24/32/5120
19/10/2022 10:20:02 
19/10/2022 10:20:02 X display :0 is 32bpp depth=24 true color
19/10/2022 10:20:02 
19/10/2022 10:20:02 Listening for VNC connections on TCP port 5900
19/10/2022 10:20:02 
19/10/2022 10:20:02 Xinerama is present and active (e.g. multi-head).
19/10/2022 10:20:02 Xinerama: number of sub-screens: 1
19/10/2022 10:20:02 Xinerama: no blackouts needed (only one sub-screen)
19/10/2022 10:20:02 
19/10/2022 10:20:02 fb read rate: 1202 MB/sec
19/10/2022 10:20:02 fast read: reset -wait  ms to: 10
19/10/2022 10:20:02 fast read: reset -defer ms to: 10
19/10/2022 10:20:02 The X server says there are 10 mouse buttons.
19/10/2022 10:20:02 screen setup finished.
19/10/2022 10:20:02 
The VNC desktop is:      03977d58abf7:0

0
******************************************************************************
Have you tried the x11vnc '-ncache' VNC client-side pixel caching feature yet?
The scheme stores pixel data offscreen on the VNC viewer side for faster
retrieval.  It should work with any VNC viewer.  Try it by running:
    x11vnc -ncache 10 ...
One can also add -ncache_cr for smooth 'copyrect' window motion.
More info: http://www.karlrunge.com/x11vnc/faq.html#faq-client-caching
[services.d] starting app...
[app] starting JDownloader 2...
[services.d] done.
[jdsupervisor] JDownloader2 not started yet.  Proceeding...