[PATCH v2 0/2 -perfbook] Add Dockerfile and Q&A

[Akira Yokosawa <akiyks@gmail.com>]

Hi,

This is the v2 of the patch set.

The strange -nq build Paul thought he had encountered prompted me
to prepare a Docker image for stable build environment.
Such an environment can be helpful as a contingency plan when
some package's update causes breakage in perfbook's build scripts,
such as the build error recently reported by Dmitry and Felipe.

This patch set adds a Dockerfile I used and a Q&A entry in
FAQ-BUILD.txt.
docker/ subdirectory also holds steel city comic font to be copied
to the image.

Changes v1 -> v2:
  o Add a few ARG commands in Dockerfile for custimizable uid and gid.
  o Entry #14 in FAQ-BUILD.txt recommends the use of -u option to
    use uid:gid of host side.
  o Changed dockerhub repository name to perfbook-build-focal.
  o Reference #14 from #5 in FAQ-BUILD.text

        Thanks, Akira
--
Akira Yokosawa (2):
  Add files to build Docker image for perfbook build
  FAQ-BUILD: Add Q&A on Docker image

 FAQ-BUILD.txt                       |  38 +++++++++++++++++++++++++---
 docker/Dockerfile                   |  21 +++++++++++++++
 docker/steel-city-comic.regular.ttf | Bin 0 -> 23280 bytes
 3 files changed, 56 insertions(+), 3 deletions(-)
 create mode 100644 docker/Dockerfile
 create mode 100644 docker/steel-city-comic.regular.ttf

-- 
2.17.1