Releases — GKE Odoo Image CI/CD & Auto-Deploy

How the GKE Odoo image is built and deployed: the odoo-image-main build trigger (push to odoo-custom-modules main) and the approval-gated odoo-deploy-tag deploy trigger (deploy-* tags). Includes how to cut a release, the single-replica restart caveat, and the deferred 2-replica/RWX follow-up.