build AppImage at push & pull-requests on master

creates AppImage at push & pull-request on master branch and uploads it as artifact.

Update create_appimage.sh

.github/workflows/build-appimage.yml

@@ -0,0 +1,48 @@
+# This is a basic workflow to help you get started with Actions
+
+name: CI
+
+# Controls when the workflow will run
+on:
+  # Triggers the workflow on push or pull request events but only for the master branch
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# 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:
+    # 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:
+      # check out github repo, $GITHUB_WORKSPACE
+      - uses: actions/checkout@v3
+
+      # make our scripts executable
+      - run: chmod +x $GITHUB_WORKSPACE/.github/scripts/setup_scrcpy.sh
+      - run: chmod +x $GITHUB_WORKSPACE/.github/scripts/create_appimage.sh
+
+      # install dependencies of scrcpy and builds scrcpy
+      - name: Run scrcpy setup script    
+        run: $GITHUB_WORKSPACE/.github/scripts/setup_scrcpy.sh
+        shell: bash
+      
+      # bundle dependencies and scrcpy to create appimage
+      - name: Run create appimage script
+        run: $GITHUB_WORKSPACE/.github/scripts/create_appimage.sh
+        shell: bash
+      
+      # upload scrcpy appimage
+      - name: Upload output file
+        uses: actions/upload-artifact@v3
+        with:
+          name: scrcpy-x86_64.AppImage
+          path: ./scrcpy*.AppImage
+