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-rw-r--r--.gitlab-ci/image-tags.yml7
1 files changed, 7 insertions, 0 deletions
diff --git a/.gitlab-ci/image-tags.yml b/.gitlab-ci/image-tags.yml
index a78819f07a8..6cc009c2737 100644
--- a/.gitlab-ci/image-tags.yml
+++ b/.gitlab-ci/image-tags.yml
@@ -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"