use correct default shell + other enhancements

Author: mikemhenry

.github/workflows/openfe-doc-build.yaml

@@ -3,6 +3,14 @@ name: Test openfe doc build
 on:
   workflow_dispatch:
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash -leo pipefail {0} 
+
 jobs:
   test-conda-build:
     runs-on: ubuntu-latest
@@ -37,4 +45,3 @@ jobs:
         run: |
           cd openfe/docs
           make
-