Actions updates

.github/workflows/main.yml

@@ -2,9 +2,14 @@ name: hdf5 dev CI
 
 # Controls when the action will run. Triggers the workflow on push or pull request
 on:
+  workflow_dispatch:
   push:
     branches: [ develop, hdf5_1_12, hdf5_1_10, hdf5_1_8 ]
-
+    paths-ignore:
+    - '.github/**'
+    - 'doc/**'
+    - 'release_docs/**'
+    
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
   # This workflow contains a single job called "build"
@@ -70,6 +75,7 @@ jobs:
     name: ${{ matrix.name }}
     # The type of runner that the job will run on
     runs-on: ${{ matrix.os }}
+    if: "!contains(github.event.head_commit.message, 'skip-ci')"
           
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps: