docker 0.8.1

Remove patches because they are all included upstream now.

Remove sha1 because I couldn't find what it referred to when using the
GitDownloadStrategy. (It seems to be ignored.)

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
docker: update 0.8.1 bottle.

Closes #27154.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
docker: install using #{version} instead 0.8.1.