Changing book file name and adding version to it.

.drone.yml

@@ -7,7 +7,7 @@ steps:
     image: 'pandoc/core:3'
     commands:
       - 'echo "Commit $DRONE_COMMIT"'
-      - 'find ./chapters -iname "*.md" -type f -print | sort | xargs -r pandoc -o book.epub title.txt'
+      - 'find ./chapters -iname "*.md" -type f -print | sort | xargs -r pandoc -o monster-club_$DRONE_TAG.epub title.txt'
   - name: gitea_release
     image: plugins/gitea-release
     settings:
@@ -15,7 +15,7 @@ steps:
         from_secret: gitea_token
       base_url: https://git.skobk.in
       files:
-        - 'book.epub'
+        - 'monster-club_$DRONE_TAG.epub'
     when:
       event:
         - tag