Write commit history to release body

.github/workflows/build_app.yml

@@ -1,7 +1,7 @@
 name: Build job
 
 on:
-  # Every Saturday at 16:00 UTC-5
+  # Every Saturday at 21:00 UTC
   schedule:
     - cron: '0 21 * * 6'
   # Manual triggers
@@ -37,6 +37,30 @@ jobs:
         with:
           java-version: 11
 
+      - name: Get previous release
+        id: last_release
+        uses: InsonusK/get-latest-release@v1.0.1
+        with:
+          myToken: ${{ github.token }}
+          exclude_types: "draft|prerelease"
+          view_top: 1
+
+      - name: Set env variables
+        run: |
+          set -x
+
+          commit_count=$(git rev-list --count HEAD)
+          echo "COMMIT_COUNT=$commit_count" >> $GITHUB_ENV
+          echo "CURRENT_SHA=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+
+          prev_commit_count=$(echo "${{ steps.last_release.outputs.tag_name }}" | sed -e "s/^r//")
+          commit_count_diff=$(expr $commit_count - $prev_commit_count)
+          echo "PREV_RELEASE_SHA=$(git rev-parse --short HEAD~$commit_count_diff)" >> $GITHUB_ENV
+
+          echo "COMMIT_LOGS<<{delimiter}
+          $(git log HEAD~$commit_count_diff..HEAD --reverse --pretty=format:'- %s (@%an)')
+          {delimiter}" >> $GITHUB_ENV
+
       - name: Set up keystore
         run: mkdir -p ~/.android/ && echo "${{ secrets.DEBUG_KEYSTORE }}" | base64 --decode > ~/.android/debug.keystore
       - name: Build APK
@@ -46,11 +70,6 @@ jobs:
           wrapper-cache-enabled: true
           dependencies-cache-enabled: true
           configuration-cache-enabled: true
-      - name: Set env variables
-        run: |
-          set -x
-          echo "COMMIT_COUNT=$(git rev-list --count HEAD)" >> $GITHUB_ENV
-          echo "CURRENT_SHA=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
 
       - name: Create GitHub release
         id: create_release
@@ -60,10 +79,10 @@ jobs:
         with:
           tag_name: r${{ env.COMMIT_COUNT }}
           release_name: Tachiyomi Preview r${{ env.COMMIT_COUNT }}
-          body: >
-            r${{ env.COMMIT_COUNT }}
+          body: |
+            Commits: https://github.com/tachiyomiorg/tachiyomi/compare/${{ env.PREV_RELEASE_SHA }}...${{ env.CURRENT_SHA }}
 
-            Latest commit: https://github.com/tachiyomiorg/tachiyomi/commit/${{ env.CURRENT_SHA }}
+            ${{ env.COMMIT_LOGS }}
           draft: ${{ github.event.inputs.dry-run != '' }}
           prerelease: false
       - name: Upload APK to release
@@ -75,7 +94,7 @@ jobs:
           asset_path: app/build/outputs/apk/standard/debug/app-standard-debug.apk
           asset_name: tachiyomi-r${{ env.COMMIT_COUNT }}.apk
           asset_content_type: application/vnd.android.package-archive
-          
+
       - name: Prune old releases
         uses: dev-drprasad/delete-older-releases@v0.2.0
         env: