Stateless hot-reload Odoo 20 codespace for 1b-agent/one-os-dev, deployed on the Easypanel project onebspace. Adapted from the proven stateless-container-for-onebspace-development blueprint (battle-tested Sep 2026 on Odoo 19) — same architecture, retargeted:

Item	Value
App service	`one-os-dev-codespace`
DB service	`one-os-dev-codespace-db` (postgres:17 + pgWeb + dbGate)
Host port	18070 → container 8069 (18069 stays with the Odoo 19 os-dev codespace)
Bind mount	`/root/Documents/trae_projects/one_b_os/one-os-dev` → `/mnt/one-os-dev` (rw)
Base image	`python:3.12-slim` (inline Dockerfile, heredoc ENTRYPOINT)
Hot reload	`--dev=reload,qweb,assets,xml,werkzeug`
Filestore	named volume `one-os-dev-codespace-filestore` → `/var/lib/odoo`

Deploy (one command + two MCP calls)

python3 deploy.py prepare   # regenerates easypanel.schema.json, inline.Dockerfile, init-odoo.sh, .db_password

Then (TRAE / agent with the Easypanel MCP):

createFromSchema with the JSON from easypanel.schema.json
deployAppService {projectName: "onebspace", serviceName: "one-os-dev-codespace"}
First boot ≈ 5 min (pip install /mnt/one-os-dev builds lxml/pillow/python-ldap)
curl -sS -o /dev/null -w '%{http_code}\n' http://127.0.0.1:18070/web/database/manager → 200
DB manager master password: admin (in .db_password is the postgres password)

Before first boot — put the source where the bind mount expects it

git clone https://agents-apps-and-tools-gitea.nxldoy.easypanel.host/1b-agent/one-os-dev.git \
    /root/Documents/trae_projects/one_b_os/one-os-dev -b 20.0

Live workflow: edit any .py/.xml/.js under that tree — changes go live on next request, no restart, no image rebuild (see the upstream blueprint README §5 for details/troubleshooting).