Replace Travis CI with GitHub Actions (#85)

.github/workflows/phar.yml

@@ -0,0 +1,92 @@
+name: Build phar
+
+on:
+  push:
+    branches: [ master ]
+    tags:
+      - '*'
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Validate composer.json and composer.lock
+      run: composer validate
+
+    - name: Cache Composer packages
+      id: composer-cache
+      uses: actions/cache@v2
+      with:
+        path: vendor
+        key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-php-
+
+    - name: Install box.phar
+      run: composer box-install
+
+    - name: Install dependencies
+      if: steps.composer-cache.outputs.cache-hit != 'true'
+      run: composer install --prefer-dist --no-progress --no-suggest
+
+    - name: Compile phar
+      run: composer box-compile
+
+    - name: Generate drush.version
+      run: sha1sum drush.phar > drush.version
+
+    - uses: actions/upload-artifact@v2
+      with:
+        name: drush
+        path: drush.phar
+
+    - uses: actions/upload-artifact@v2
+      with:
+        name: drush
+        path: drush.version
+
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/')
+    steps:
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          draft: false
+          prerelease: false
+      - name: Download phar artifact
+        uses: actions/download-artifact@v2
+        with:
+          name: drush
+      - name: "Upload Release Asset: drush.phar"
+        id: upload-release-asset-phar
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps 
+          asset_path: ./drush.phar
+          asset_name: drush.phar
+          asset_content_type: application/octet-stream
+      - name: "Upload Release Asset: drush.version"
+        id: upload-release-asset-version
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps 
+          asset_path: ./drush.version
+          asset_name: drush.version
+          asset_content_type: text/plain
+
+