Merge branch 'jk/ci-only-on-selected-branches'

Instead of always building all branches at GitHub via Actions,
users can specify which branches to build.

* jk/ci-only-on-selected-branches:
  ci: allow per-branch config for GitHub Actions

1 files changed, 26 insertions, 0 deletions

diff --git a/ci/config/allow-refs.sample b/ci/config/allow-refs.sample
new file mode 100755
index 0000000000..f157f1945a
--- /dev/null
+++ b/ci/config/allow-refs.sample
@@ -0,0 +1,26 @@
+#!/bin/sh
+#
+# Sample script for enabling/disabling GitHub Actions CI runs on
+# particular refs. By default, CI is run for all branches pushed to
+# GitHub. You can override this by dropping the ".sample" from the script,
+# editing it, committing, and pushing the result to the "ci-config" branch of
+# your repository:
+#
+#   git checkout -b ci-config
+#   cp allow-refs.sample allow-refs
+#   $EDITOR allow-refs
+#   git commit -am "implement my ci preferences"
+#   git push
+#
+# This script will then be run when any refs are pushed to that repository. It
+# gets the fully qualified refname as the first argument, and should exit with
+# success only for refs for which you want to run CI.
+
+case "$1" in
+# allow one-off tests by pushing to "for-ci" or "for-ci/mybranch"
+refs/heads/for-ci*) true ;;
+# always build your integration branch
+refs/heads/my-integration-branch) true ;;
+# don't build any other branches or tags
+*) false ;;
+esac