* Fix#6162: Always stop before preinstall
Also: if creating a new user, chown the home directory just to be on the safe side (if /var/lib/evcc already exists but belongs to someone else)
* Add the evcc user to the dialout group
This allows evcc to access /dev/tty.
Fix#6140
APT packaging fixes
- Adopt nightly versioning to be parsed
- Fix binary source path for release builds
Improve unstable build versioning
Use timestamp as bugfix version, as we would have the same version number in all builds until the version tag gets updated
- Add publishing automated debian package releases via Cloudsmith.io, which allows evcc to be installed and updated via `apt`
- Add nightly docker (:latest) and deb distribution
- Disable docker builds for every commit on master
- Allow nightly builds to be triggered manually
