Localstack lambda trying to reach AWS outside container - node.js

Question

I have a localstack image :
version: '3'
services:
localstack:
image: localstack:latest
ports:
- 4566:4566
environment:
- SERVICES=ssm
- DEBUG=1
- DATA_DIR=/tmp/localstack/data
- LOCALSTACK_HOSTNAME=localstack
- LAMBDA_EXECUTOR=local
- LAMBDA_REMOTE_DOCKER=true
volumes:
- './.localstack:/tmp/localstack'
- '/var/run/docker.sock:/var/run/docker.sock'
I created a lambda which is running inside the docker container :
service: service-trigger-action-runner
provider:
name: aws
region: eu-central-1
runtime: nodejs12.x
plugins:
- serverless-offline
custom:
defaultStage: local
functions:
trigger_action_runner:
handler: ../src/trigger_action_runner.handler
environment:
URL_SSM: 'http://localhost:4566'
AWS_ACCESS_KEY_ID: 'ABCDEFGH123456'
AWS_SECRET_ACCESS_KEY: 'key'
Launching the all in a node.js integration test, I'am sending an event in order to trigger my lambda, this part is successfully working
const lambda = new Lambda({
apiVersion: '2031',
endpoint: 'http://localhost:3000'
})
const params = {
FunctionName: 'service-trigger-action-runner-dev-trigger_action_runner',
InvocationType: 'RequestResponse',
Payload: JSON.stringify({ eventTypeAliasName: "fake_event_alias"})
}
await lambda.invoke(params).promise()
Inside my handle script, I'm creating a lambda alias, and my issue is that this call is not staying inside my container, it's not mocked :
exports.handler = async (event) => {
const params = {
Description: 'alias name',
FunctionName: event.eventTypeAlias,
FunctionVersion: '007',
Name: event.eventTypeAliasName
}
console.log(`Creating alias with params=${JSON.stringify(params)}`)
return await lambdaAwsClient.createAlias(params).promise()
This below error is thrown :
UnrecognizedClientException: The security token included in the request is invalid.
How can I do to keep the call createAlias inside the container ?