Automate workflow

.github/workflows/bump_sdk.yml

@@ -0,0 +1,15 @@
+name: Bump Android SDK version
+
+on:
+  schedule:
+  - cron: "12 0 * * *"
+
+jobs:
+  bump_caddy:
+    runs-on: ubuntu-latest
+    steps:
+
+    - uses: actions/checkout@v2
+
+    - name: Bump and commit
+      run: ./bump-sdk-version

bump-sdk-version

@@ -43,17 +43,27 @@ echo "+ Done!"
 
 echo
 
+echo "+ Adding changed files"
+
+git config user.name "${GITHUB_ACTOR}"
+git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
+git add Dockerfile ndk/Dockerfile
+
+if output=$(git status --porcelain) && [ ! -z "$output" ]; then
+
 echo "+ Committing"
 
-git commit -a -m "Bump SDK version to $ANDROID_SDK_VERSION"
+git commit -m "Bump SDK version to $ANDROID_SDK_VERSION"
 
 echo "+ Tagging"
 
-git tag $ANDROID_SDK_VERSION
+git tag -f $ANDROID_SDK_VERSION
 
 echo "+ Pushing"
 
-git push
-git push --tags
+git push -f
+git push --tags -f
 
 echo "+ Done!"
+
+fi