LibreCAD

2D CAD drafting for DXF drawings

LibreCAD is a 2D CAD application for technical drawing and DXF work, streamed here in a remote desktop session and backed by remote compute. It builds on the Ubuntu Desktop image — LibreCAD launches maximized with the window decorations and taskbar hidden, so the drawing area fills the screen.

Usage

1. Deploy

dxflow workflow create --identity librecad hub://librecad

# Start with defaults, or tune per run with --override
dxflow workflow start librecad
dxflow workflow start librecad \
    --override env.app.VNC_PASSWORD=my-strong-pass \
    --override env.app.TASKBAR=show

# Publish the web port on an HTTPS link
dxflow workflow start librecad --link

2. Open the app

Open your browser at http://localhost:6082/vnc.html and enter the password you set in VNC_PASSWORD. LibreCAD is already running and maximized. Port 5901 is also exposed for connecting a native VNC client. A start given --link publishes port 6082 at an HTTPS URL printed on the start line — open it at /vnc.html to reach LibreCAD from anywhere.

3. Persist data

Anything under /volume persists across restarts — save your work there to keep it.

Configuration

name: librecad
tags:
    - engineering
steps:
    - name: app
      runtime: docker
      mode: parallel
      image: ghcr.io/dxflow-ai/librecad:latest
      volumes:
          - name: volume
            host: ./volume
            container: /volume
      ports:
          - name: web
            host: "6082"
            container: "6082"
          - name: vnc
            host: "5901"
            container: "5901"
          - name: audio
            host: "6100"
            container: "6100"
      env:
          - VNC_PASSWORD=dxflow
          - WALLPAPER=show
          - PANEL=hide
          - TASKBAR=hide
          - AUDIO=off
          - AUDIO_PORT=6100
          - AUDIO_CHANNELS=1
          - AUDIO_RATE=22050
      resources:
          cpu: "2"
          memory: 4G
      link: web

[volume]
app.volume = ./volume

[port]
app.web = 6082
app.vnc = 5901
app.audio = 6100

[env]
app.VNC_PASSWORD = dxflow
app.WALLPAPER = show
app.PANEL = hide
app.TASKBAR = hide
app.AUDIO = off
app.AUDIO_PORT = 6100
app.AUDIO_CHANNELS = 1
app.AUDIO_RATE = 22050

[resource]
app.cpu = 2
app.memory = 4G

{
    "arch": ["amd64", "arm64"],
    "image": "ghcr.io/dxflow-ai/librecad:latest",
    "version": "2.2.0.2",
    "size": {
        "amd64": "526M",
        "arm64": "515M"
    },
    "minimum": {
        "cpu": 2,
        "memory": "2G",
        "storage": "20G"
    }
}

Notes

Set a strong VNC_PASSWORD; it defaults to dxflow, which every reader of this page knows.
The panel and taskbar are hidden by default so the drawing area fills the screen. Set PANEL=show or TASKBAR=show to bring back the window decorations and taskbar.
Audio: off by default. Set AUDIO=on to stream desktop sound; tune with AUDIO_CHANNELS (1 or 2) and AUDIO_RATE (8000/16000/22050/32000/44100). The audio port is AUDIO_PORT (default 6100) — the client follows it, so to run two sessions on one host give each its own port by setting AUDIO_PORT and the matching audio port mapping together.
Void has no LibreCAD package, so this entry builds on the Ubuntu desktop instead.

KiCad

Schematic capture and PCB design

Geospatial

GIS and astronomy applications streamed to your browser