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