play with github workflows

.github/workflows/main.yml

@@ -6,14 +6,15 @@ name: miniupnpc, minissdpd
 # events but only for the master branch
 on:
   push:
-    branches: [ master ]
+    paths:
+    - 'miniupnpc/**'
+    - 'miniupnpd/**'
   pull_request:
     branches: [ master ]
 
 # 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"
-  build:
+  build-miniupnpc:
     # The type of runner that the job will run on
     runs-on: ubuntu-latest
 
@@ -25,6 +26,15 @@ jobs:
       - name: build miniupnpc
         run: make -C miniupnpc all check
 
+  build-minissdpd:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+
       - name: install packages
         run: sudo apt-get install libnfnetlink-dev