Merge pull request #2704 from buildkite/bm/skipci_messaging

Add context around [skip ci] use and builds not triggering

Author: mcncl

pages/pipelines/skipping.md

@@ -46,6 +46,10 @@ To manually cancel a job:
 
 Some code changes, such as editing a Readme, may not require a Buildkite build. If you want Buildkite to ignore a commit, add `[ci skip]`,`[skip ci]`, `[ci-skip]`, or `[skip-ci]` anywhere in the commit message.
 
+>📘
+> When squashing commits in a merge, any commit message that contains `[skip ci]` will be included in the squashed commit message. This means that the merge will not trigger a build.
+> In order to avoid this and have the merge trigger a build, you should remove the commit containing `[skip ci]` from the squashed commit message.
+
 For example, the following commit message will cause Buildkite to ignore the commit and not create a corresponding build:
 
 ```