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docs: add design spec for docker service version updates (jellyfin 10.11.7, gitea 1.25.5)

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Tuan-Dat Tran
2026-04-01 21:17:05 +02:00
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# Design Specification: Docker Service Version Updates (Jellyfin 10.11.7 & Gitea 1.25.5)
## 1. Goal
Redeploy Docker services on the `docker-host11` host to apply specific and latest image version updates:
- **Jellyfin:** `10.11` → `10.11.7`
- **Gitea:** `1.24-rootless` → `1.25.5-rootless`
## 2. Context
Following the initial redeployment, the user requested further updates to specific versions. These changes will be applied to `vars/group_vars/docker/docker.yaml` and deployed via the `docker.yaml` playbook.
## 3. Implementation Approach: Full Playbook Execution
This approach ensures the entire state of the Docker host matches the defined configuration, including the new versions.
### 3.1 Targeted Components
- **Inventory:** `vars/docker.ini`
- **Playbook:** `playbooks/docker.yaml`
- **Target Host:** `docker-host11`
### 3.2 Workflow Details
1. **Configuration Update:** Update `vars/group_vars/docker/docker.yaml` with the target image versions.
2. **Host Verification:** Confirm accessibility of `docker-host11` via Ansible.
3. **Playbook Execution:** Run `ansible-playbook -i vars/docker.ini playbooks/docker.yaml`.
4. **Template Application:** The `docker_host` role will update `/opt/docker/compose/compose.yaml`.
5. **Container Recreation:** Docker Compose will detect the image change, pull the new images (`10.11.7` and `1.25.5-rootless`), and recreate the containers.
## 4. Success Criteria & Verification
- **Criteria 1:** Playbook completes without failure.
- **Criteria 2:** Jellyfin container is running image `jellyfin/jellyfin:10.11.7`.
- **Criteria 3:** Gitea container is running image `gitea/gitea:1.25.5-rootless`.
### Verification Steps
- Run `ansible -i vars/docker.ini docker_host -m shell -a "docker ps --format '{{.Names}}: {{.Image}}'"` to verify running versions.
- Confirm container health status.
## 5. Potential Risks
- **Service Downtime:** Containers will restart during image update.
- **Database Migrations:** Gitea 1.25 may have database migrations from 1.24. This is handled internally by the Gitea container on startup.
- **Pull Failures:** Depends on external network connectivity.