refactor: move config/config to root

Fix tomsquest#34

chore: skip cleanup else Dockerfile.$ARCH get removed

fix: set same version for Travis build that locally

Merge pull request tomsquest#25 from robertbeal/upgrade-version

Upgrade to 2.1.9

Merge pull request tomsquest#24 from tomsquest/remove-tini

Remove tini in favor of `--init`

Merge pull request tomsquest#23 from robertbeal/update-alpine

Update python/alpine

reduce instructions to minimal and production

doc: add InfCloud info

doc: add Waja contribution

doc: add tagging along Radicale version