chore: let composite action's caller install kernel headers.

README.md

@@ -59,7 +59,7 @@ Therefore, running Falco tests in your Github workflow is as easy as adding this
     # Default: 'false'.
     test-k8saudit: 'true'
 
-    # Whether to test drivers.
+    # Whether to test drivers. Requires kernel headers to be installed.
     # Default: 'false'.
     test-drivers: 'true'
 
@@ -80,6 +80,7 @@ Therefore, running Falco tests in your Github workflow is as easy as adding this
 
 > __NOTE:__ Since we don't use annotated tags, one cannot use eg: falcosecurity/testing@v0, but only either exact tag name, branch name or commit hash.
 
+> __NOTE:__ The action implies it gets ran on ubuntu or debian like distro. It uses `apt` to install some deps.
 
 ## Keep tests updated with the latest Falco version
 

action.yml

@@ -15,7 +15,7 @@ inputs:
     required: false
     default: 'false'
   test-drivers:  
-    description: 'Whether to run drivers tests. Default disabled.'
+    description: 'Whether to run drivers tests. Requires kernel headers to be installed. Default disabled.'
     required: false
     default: 'false'  
   static:
@@ -67,15 +67,11 @@ runs:
         ${{ inputs.sudo }} falcoctl artifact install cloudtrail-rules
 
     - name: Install dependencies for falco-driver-loader tests
-      if: ${{ inputs.arch == 'x86_64' && inputs.test-drivers == 'true' }}
+      if: ${{ inputs.test-drivers == 'true' }}
       shell: bash
       run: |
         ${{ inputs.sudo }} apt update -y
-        ${{ inputs.sudo }} apt install -y --no-install-recommends build-essential clang make llvm gcc dkms linux-headers-$(uname -r)
-
-    - name: Install dependencies for falco-driver-loader tests
-      if: ${{ inputs.arch == 'aarch64' && inputs.test-drivers == 'true' }}
-      uses: self-actuated/get-kernel-sources@master
+        ${{ inputs.sudo }} apt install -y --no-install-recommends build-essential clang make llvm gcc dkms
 
     - name: Run tests
       working-directory: ${{ github.action_path }}