Andrew Cooper aa2b6e4d84 CI: Formalise the use of heredocs ...

Commit b5739330d7 introduced the use of heredocs in the jessie/stretch
dockerfiles.

It turns out this was introduced by BuildKit in 2018 along with a
standardisation of Dockerfile syntax, and has subsequently been adopted by the
docker community.

Annotate all dockerfiles with a statement of the syntax in use, and extend
README.md details including how to activate BuildKit when it's available but
off by default.

This allows the containers to be rebuilt following commit a0e29b3163 ("CI:
Drop glibc-i386 from the build containers").

Fixes: b5739330d7 ("automation: fix jessie/stretch images to use archive.debian.org apt repos")
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Release-Acked-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>

2024-07-04 19:07:32 +01:00

..

29.dockerfile

CI: Formalise the use of heredocs

2024-07-04 19:07:32 +01:00