Allow localstack Python lambda functions to talk to localstack:4566 vs AWS. Grab a copy of session.py, apply the patch and mount it into the LAMBDA docker containers

Boto3 session.py patch

This is the latest session.py file from https://github.com/boto/boto3 version 1.26.118 with the following patch
to allow for the AWS_ENDPOINT_URL to override the defaults

~~~
diff --git a/boto3/session.py b/boto3/session.py
index bdda65ad..ba57fbb2 100644
--- a/boto3/session.py
+++ b/boto3/session.py
@@ -296,6 +296,9 @@ class Session:
         :return: Service client instance

         """
+        if endpoint_url is None:
+            endpoint_url = os.environ.get("AWS_ENDPOINT_URL")
+
         return self._session.create_client(
             service_name,
             region_name=region_name,
~~~

docker-compose.yml

  localstack:
    container_name: localstack_main
    hostname: localstack
    image: localstack/localstack:2.0.2
    profiles: ["localstack"]
    mem_limit: 2g
    sysctls:
        - net.ipv4.tcp_tw_reuse=1
        - net.ipv4.tcp_fin_timeout=10
    ports:
      - "4510-4600:4510-4600"
    environment:
      - ACTIVATE_PRO=0
      - HOSTNAME=localstack
      - LOCALSTACK_HOST=host.docker.internal
      - LAMBDA_DOCKER_FLAGS=--add-host $BRITIVE_LOCAL_DEVELOPMENT_AWS_RESOURCE_PREFIX-es-cluster.$DEFAULT_REGION.es.localhost.localstack.cloud:host-gateway
                        --add-host localstack:host-gateway
                        --add-host mysql:host-gateway
                        -e AWS_ENDPOINT_URL=http://localstack:4566
                        -v $BRITIVE_LOCAL_DEVELOPMENT_LOCAL_DEV_DIR/data/python/boto/session.py:/var/runtime/boto3/session.py
      # - LS_LOG=trace
      # - DEBUG=1
    extra_hosts: # Required for Linux/AWS Workstation
      - "host.docker.internal:host-gateway"
      - "$BRITIVE_LOCAL_DEVELOPMENT_AWS_RESOURCE_PREFIX-es-cluster.$DEFAULT_REGION.es.localhost.localstack.cloud:host-gateway"
    volumes:
       - $BRITIVE_LOCAL_DEVELOPMENT_LOCAL_DEV_DIR/data/localstack/podfiles:/mnt/data
       - $BRITIVE_LOCAL_DEVELOPMENT_LOCAL_DEV_DIR/data/localstack/podload.sh:/etc/localstack/init/ready.d/podload.sh
       - /var/run/docker.sock:/var/run/docker.sock