[docker] Add Dockerfile that builds skiaserve.

Bug: skia:
Change-Id: If43c546fd7909329a015302580bc50925f4b7630
Reviewed-on: https://skia-review.googlesource.com/128313
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
Auto-Submit: Joe Gregorio <jcgregorio@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
2 files changed