Restores official Portainer Agent image source (ghcr.io/portainerci/agent:latest)
in COPY --from statements. Previous code review feedback inadvertently introduced
a circular dependency that prevents Docker builds.
This fixes Issue #2318 where users cannot update due to 404 manifest unknown error.
Closes#2318
Fixes#2307
Changes:
- Update bashio from v0.17.5 → main branch (improved API error handling)
- Add robust protection mode check with Docker socket fallback
- Implement Level 1 (standard bashio) + Level 2 (socket check) fallback logic
- Update CHANGELOG.md with fix details
- Tested and verified working on Home Assistant OS with protection mode OFF
The fix addresses root cause: bashio v0.17.5 calls /addons/self endpoint
which returns 403 Forbidden. bashio's error handling incorrectly assumes
this means protection mode is ON. The fallback checks Docker socket directly
as a reliable indicator of actual protection mode state.
