add to cloudwatch readme, supports for localstack (#1462)

* add to cloudwatch readme, supports for localstack

Signed-off-by: Honglin Cao <[email protected]>

* Update pipeline/outputs/cloudwatch.md

Co-authored-by: esmerel <[email protected]>
Signed-off-by: V2arK <[email protected]>
Signed-off-by: Honglin Cao <[email protected]>

---------

Signed-off-by: Honglin Cao <[email protected]>
Signed-off-by: V2arK <[email protected]>
Co-authored-by: esmerel <[email protected]>

Author: V2arK

pipeline/outputs/cloudwatch.md

@@ -61,6 +61,16 @@ In your main configuration file append the following _Output_ section:
     log_stream_prefix from-fluent-bit-
     auto_create_group On
 ```
+#### Intergration with Localstack (Cloudwatch Logs)
+
+For an instance of Localstack running at `http://localhost:4566`, the following configuration needs to be added to the `[OUTPUT]` section:
+
+```text
+endpoint localhost
+port 4566
+```
+
+Any testing credentials can be exported as local variables, such as `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`.
 
 ### Permissions
 
@@ -250,4 +260,4 @@ You can use our SSM Public Parameters to find the Amazon ECR image URI in your r
 aws ssm get-parameters-by-path --path /aws/service/aws-for-fluent-bit/
 ```
 
-For more see [the AWS for Fluent Bit github repo](https://github.com/aws/aws-for-fluent-bit#public-images).
+For more see [the AWS for Fluent Bit github repo](https://github.com/aws/aws-for-fluent-bit#public-images).