comments added to yaml file

.github/workflows/automate_arm_linux_build.yml

@@ -3,11 +3,14 @@ name: Linux ARM build
 on:
   push:
     paths:
+      # only trigger the action if things are changing
+      # in the imls-wifi-sensor or in this yaml file
       - 'imls-wifi-sensor/**'
       - '.github/workflows/automate_arm_linux_build.yml'
   pull_request:
     paths:
       - 'imls-wifi-sensor/**'
+      - '.github/workflows/automate_arm_linux_build.yml'
 
   workflow_dispatch:
 
@@ -18,15 +21,14 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v4
         with:
-          # The Go version to download (if necessary) and use.
-          #go-version: '1.19.5'
+          # use the go.mod and go.sum files for deps and versioning
           go-version-file: imls-wifi-sensor/go.mod
           cache-dependency-path: imls-wifi-sensor/go.sum
       - name: build the executables
         run: | 
           cd imls-wifi-sensor
+          # there is a special Makefile just for gh-actions
           make -f Makefile.gh-actions all
-          ls 
       - name: Upload the session counter
         uses: actions/upload-artifact@v3
         with: