From b6d3040c6853ebd69da7623a3b6afd8555d5b90f Mon Sep 17 00:00:00 2001
From: Ernesto Puerta <epuertat@redhat.com>
Date: Tue, 23 Jan 2024 19:44:26 +0100
Subject: [PATCH] ci: cancel CI run when another starts

When a user pushes a change to a PR, if there was an ongoing CI run,
this will cancel any previous runs. This will save some CO2.

Signed-off-by: Ernesto Puerta <epuertat@redhat.com>
---
 .github/workflows/build-container.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.github/workflows/build-container.yml b/.github/workflows/build-container.yml
index b58f2c3a..caaedd19 100644
--- a/.github/workflows/build-container.yml
+++ b/.github/workflows/build-container.yml
@@ -14,6 +14,10 @@ on:  # yamllint disable rule:truthy
   release:
     types:
       - created
+# Credit: https://stackoverflow.com/a/72408109
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
 env:
   WAIT_INTERVAL_SECS: 1
 jobs: