don't use S3 CreateBucket and clean up

deploy/docker-compose.yml

@@ -14,12 +14,27 @@ services:
     volumes:
       - seaweedfs_data:/data
 
+  s3-init:
+    image: minio/mc:latest
+    depends_on:
+      - seaweedfs
+    environment:
+      AWS_ACCESS_KEY_ID: ${S3_ACCESS_KEY:-minioadmin}
+      AWS_SECRET_ACCESS_KEY: ${S3_SECRET_KEY:-minioadmin}
+      S3_BUCKET: ${S3_BUCKET:-officeconvert}
+    entrypoint: >
+      /bin/sh -c "
+      until mc alias set local http://seaweedfs:8333 $$AWS_ACCESS_KEY_ID $$AWS_SECRET_ACCESS_KEY; do sleep 1; done &&
+      mc mb local/$$S3_BUCKET --ignore-existing
+      "
+
   server:
     build:
       context: ..
       dockerfile: Dockerfile.server
     depends_on:
-      - seaweedfs
+      s3-init:
+        condition: service_completed_successfully
     environment:
       S3_ENDPOINT: ${S3_ENDPOINT:-seaweedfs:8333}
       S3_PUBLIC_ENDPOINT: ${S3_PUBLIC_ENDPOINT:-localhost:8333}