Auto-create S3 buckets for minio.

docker-compose.yml

@@ -38,6 +38,23 @@ services:
       - "10000:9000"
     restart: always
 
+  # Create buckets for minio.
+  createbuckets:
+    image: minio/mc
+    depends_on:
+      - minio
+    env_file: .env
+    entrypoint: >
+      /bin/sh -c "
+      /usr/bin/mc alias set minio http://minio:9000 $MINIO_ROOT_USER $MINIO_ROOT_PASSWORD;
+      /usr/bin/mc mb minio/attachments;
+      /usr/bin/mc mb minio/avatars;
+      /usr/bin/mc mb minio/backgrounds;
+      /usr/bin/mc mb minio/icons;
+      /usr/bin/mc mb minio/banners;
+      exit 0;
+      "
+
   # REVOLT file hosting service (Autumn)
   autumn:
     image: revoltchat/autumn