Fix workflow, S3 Upload

.github/workflows/compile_test_release.yml

@@ -1,6 +1,12 @@
 name: Compile, Test and Release
 
-on: [ push, pull_request ]
+on:
+  push:
+    branches:
+    - 'master'
+  pull_request:
+    branches:
+    - '*'
 
 defaults:
   run:
@@ -146,12 +152,6 @@ jobs:
         working-directory:  ${{ runner.temp }}/shadow_build_dir  
         run:                ${SOURCE_DIR}/deploy/create_linux_appimage.sh ${SOURCE_DIR} ./staging ./package;
 
-      - name: Save artifact
-        if:   ${{ matrix.config.save-artifact }}
-        uses: actions/upload-artifact@master
-        with:
-          name: ${{ matrix.config.artifact }}
-          path: ${{ runner.temp }}/shadow_build_dir/package/${{ matrix.config.artifact }}
 
       - name: Upload artifact to S3 Bucket
         if:   ${{ matrix.config.save-artifact && github.event_name == 'push' }}
@@ -159,10 +159,16 @@ jobs:
         with:
           args: --acl public-read
         env:
-          AWS_S3_BUCKET:          qgroundcontrol
+          AWS_S3_BUCKET:          'qgroundcontrol'
           AWS_REGION:             'us-west-1'
           AWS_ACCESS_KEY_ID:      ${{ secrets.AWS_ACCESS_KEY_ID }}
           AWS_SECRET_ACCESS_KEY:  ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-          SOURCE_DIR:             ${{ runner.temp }}/shadow_build_dir/package/${{ matrix.config.artifact }}
+          SOURCE_DIR:             '${{ runner.temp }}/shadow_build_dir/package/${{ matrix.config.artifact }}'
           LOCAL_DIR:              'master'
 
+      - name: Save artifact
+        if:   ${{ matrix.config.save-artifact }}
+        uses: actions/upload-artifact@master
+        with:
+          name: ${{ matrix.config.artifact }}
+          path: ${{ runner.temp }}/shadow_build_dir/package/${{ matrix.config.artifact }}