no-release(fix): workflow concurrent execution conditions (#22)

Fix workflow concurrent execution conditions

In a feature branch we want to cancel ongoing runs
In a release branch we don't want to cancel ongoing runs

Author: kivra-pauoli

.github/workflows/erlang.yml

@@ -2,6 +2,10 @@ name: Erlang CI
 
 on: [push]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}
+
 jobs:
 
   build_and_test: