After nh3-docker's swap, two systemd unit gotchas surfaced that the
playbook now handles automatically:
* The docker.io-era /etc/systemd/system/docker.service.d/override.conf
hardcoded ExecStart=/usr/sbin/dockerd; docker-ce installs at
/usr/bin/dockerd → daemon failed status=203/EXEC.
* The shipped docker-ce unit's ExecStart=dockerd -H fd:// conflicts
with daemon.json hosts: (defined for the 0.0.0.0:2375 homepage
discovery binding) → "conflicting host options".
The "Rewrite docker.service drop-in" step now backs up any existing
override, probes daemon.json for a hosts: setting, and installs an
override that strips -H from ExecStart when needed. Also added an
explicit systemctl reset-failed step to clear the start-rate-limit
state that 3 failed install-time starts leave behind.
configs/homepage/docker.yaml: comment out irv-ml1-docker provider —
20s-per-poll ETIMEDOUTs from the stalled host were drowning homepage's
logs and apparently blocking ana-pfi-docker discovery (the Miniflux
card in the News group wouldn't render until removal). Re-enable when
irv-ml1 is back.
STATUS.md: new "Active migration" section tracking the docker-ce
rollout — nh3-docker done; esh-docker-vm + ana-docker queued.
vh
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