diff --git a/README.md b/README.md
index 56ea23b..6d04d49 100644
--- a/README.md
+++ b/README.md
@@ -203,6 +203,12 @@ For easy deployment, we've created a Docker container.
 ```bash
 docker run --publish 8080:8080 dutchcoders/transfer.sh:latest --provider local --basedir /tmp/
 ```
+Pass the params to the transfer.sh binary inside container by the *args*, not through docker environment vars.
+
+```bash
+docker run -p 8080:8080 dutchcoders/transfer.sh:latest --provider s3 --http-auth-user my-username --http-auth-pass somepassword --aws-access-key $AWS_ACCESS_KEY_ID --aws-secret-key $AWS_SECRET_ACCESS_KEY --bucket $AWS_TRANSFERSH_BUCKET --s3-region $AWS_TRANSFERSH_BUCKET_REGION
+```
+
 
 ## S3 Usage