ci: document max image tag length

I've known about this for years and yet I still accidentally wrote a too
long tag.

Document this for myself next time, and for everyone else.

Signed-off-by: Eric Engestrom <eric@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24560>
This commit is contained in:
Eric Engestrom 2023-08-08 16:22:05 +01:00 committed by Marge Bot
parent 39e281073a
commit 53231b0137

View file

@ -1,3 +1,10 @@
# Keep the tags below under 25-30 chars each, as they end up combined into
# docker image tags, and docker has a length limit of 128 chars total in tags.
#
# If you update a tag and you get an error like this:
# cannot parse input: "$image:$tag": invalid reference format
# check the length of $tag; if it's > 128 chars you need to shorten your tag.
variables:
DEBIAN_X86_64_BUILD_BASE_IMAGE: "debian/x86_64_build-base"
DEBIAN_BASE_TAG: "2023-08-03-mold"