## docker-compose.yml
```
version: "3"
volumes:
dynamodb-data:
external: true
services:
dynamodb-local:
image: amazon/dynamodb-local
ports:
- "8000:8000"
command: ["-jar", "DynamoDBLocal.jar", "-sharedDb", "-dbPath", "./data"]
volumes:
- dynamodb-data:/home/dynamodblocal/data
```
## use docker-compose
```
docker-compose up -d
```
## login your docker container
```
docker exec -u root -t -i
/bin/bash
```
## change your docker container database file permission
```
chmod a+rw /home/dynamodblocal/data
```
refer: https://stackoverflow.com/questions/41221532/docker-volume-need-permissions-to-write-to-database