self-hosted runners for python actions (#584)

.github/workflows/python.yml

@@ -44,7 +44,7 @@ defaults:
     working-directory: binding/python
 
 jobs:
-  build:
+  build-github-hosted:
     runs-on: ${{ matrix.os }}
 
     strategy:
@@ -72,3 +72,23 @@ jobs:
 
     - name: Test
       run: python test_porcupine.py ${{secrets.PV_VALID_ACCESS_KEY}}
+
+
+  build-self-hosted:
+    runs-on: ${{ matrix.machine }}
+
+    strategy:
+      matrix:
+        machine: [rpi2, rpi3, rpi4, jetson, beaglebone]
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Pre-build dependencies
+      run: python3 -m pip install --upgrade pip
+
+    - name: Install dependencies
+      run: pip3 install -r requirements.txt
+
+    - name: Test
+      run: python3 test_porcupine.py ${{secrets.PV_VALID_ACCESS_KEY}}