add shell command

Author: thinkAfCod

Diff for: .env.default

@@ -8,6 +8,7 @@ VERBOSE=3
 # LOG_ROTATION=DAILY
 
 # beacon chain endpoint url
+# easily apply for a Beacon Chain endpoint on the quicknode.com platform.
 BEACON_ENDPOINT=http://localhost:3500
 
 # beacon client request timeout
@@ -17,6 +18,7 @@ BEACON_ENDPOINT=http://localhost:3500
 #POLL_INTERVAL=6
 
 # blob archiver api server listening address
+# blob sidecars data is obtained from this endpoint.
 LISTEN_ADDR=0.0.0.0:8000
 
 # blob archiver origin block number
@@ -34,14 +36,17 @@ AWS_SECRET_ACCESS_KEY=password
 # s3 storage region just use default value: us-east-1
 AWS_REGION=us-east-1
 
+#S3_CLIENT
+S3_CLIENT=minio
+
 # s3 storage endpoint
-S3_ENDPOINT=http://localhost:9000
+S3_ENDPOINT=http://${S3_CLIENT}:9000
 
 # s3 storage bucket
-S3_BUCKET=
+S3_BUCKET=blobs
 
 # s3 storage path
-S3_PATH=
+S3_PATH=/
 
 # s3 storage compress
 S3_COMPRESS=true

Diff for: README.md

@@ -41,6 +41,20 @@ to your beacon client and storage backend of choice. Then you can run the projec
 docker compose up
 ```
 
+#### Get blobs
+After successfully starting the service, you can use the following command to obtain the blob:
+
+- get blob by block id from api service:
+```shell
+# also there is support other type of block id, like: finalized,justified.
+curl -X 'GET' 'http://localhost:8000/eth/v1/beacon/blob_sidecars/head' -H 'accept: application/json'
+```
+
+- get blob by slot number from api service:
+```shell
+curl -X 'GET' 'http://localhost:8000/eth/v1/beacon/blob_sidecars/7111008' -H 'accept: application/json'
+```
+
 ##  Options
 
 ### `verbose`