improve the lambda container images tutorial

[HarshCasper]

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[github-actions]

🎊 PR Preview has been successfully built and deployed to https://localstack-docs-preview-pr-628.surge.sh 🎊

[joe4dev]

nice incremental improvements 👍

The main comment is to sync with LS pro sample + the LocalStack bug, which currently breaks this tutorial 😬

[joe4dev]

It seems that something is broken. I'm running into an endless loop, similar to recent user reports here: localstack/localstack#7792

That seems rather a LocalStack issue:

2023-05-19T18:17:38.717 DEBUG --- [Executor-1_0] l.u.c.docker_sdk_client    : Pulling Docker image: localstack-lambda-container-image
2023-05-19T18:17:38.726  INFO --- [   asgi_gw_1] localstack.request.aws     : AWS sts.AssumeRole => 200
2023-05-19T18:17:40.603 DEBUG --- [Executor-1_0] l.s.a.i.docker_runtime_exe : Unable to pull image ImageCode(image_uri='localstack-lambda-container-image', repository_type='ECR', code_sha256='b338b9a64859ad81339747514419d1afba61e58baccc5421c9be6aa48381fd3a') for executor preparation. Maybe image is only available locally?
2023-05-19T18:17:40.606 DEBUG --- [Executor-1_0] l.s.a.i.version_manager    : Changing Lambda 'arn:aws:lambda:us-east-1:000000000000:function:localstack-lambda-container-image:$LATEST' (id b31a9e05) to active
2023-05-19T18:17:46.742  INFO --- [   asgi_gw_1] localstack.request.aws     : AWS lambda.GetFunction => 200
2023-05-19T18:18:12.628 DEBUG --- [functhread71] l.s.a.i.version_manager    : Got invocation event 90819e11-78a6-4244-a140-e756b1958e2e in loop
2023-05-19T18:18:12.629 DEBUG --- [functhread71] l.s.a.i.version_manager    : Starting new environment
2023-05-19T18:18:12.630 DEBUG --- [functhread71] l.s.a.i.docker_runtime_exe : Creating service endpoint for function arn:aws:lambda:us-east-1:000000000000:function:localstack-lambda-container-image:$LATEST executor 8deec8caaff7ff4728f572dfa534a3dd
2023-05-19T18:18:12.630 DEBUG --- [functhread71] l.s.a.i.docker_runtime_exe : Finished creating service endpoint for function arn:aws:lambda:us-east-1:000000000000:function:localstack-lambda-container-image:$LATEST executor 8deec8caaff7ff4728f572dfa534a3dd
2023-05-19T18:18:12.630 DEBUG --- [functhread71] l.s.a.i.docker_runtime_exe : Assigning container name of localstack-main-lambda-localstack-lambda-container-image-8deec8caaff7ff4728f572dfa534a3dd to executor 8deec8caaff7ff4728f572dfa534a3dd
2023-05-19T18:18:12.664  INFO --- [   asgi_gw_0] localstack.request.aws     : AWS sts.AssumeRole => 200
2023-05-19T18:18:12.669 DEBUG --- [ge:$LATEST_0] l.u.c.container_client     : Getting networks for container: localstack_main
2023-05-19T18:18:12.685  INFO --- [ge:$LATEST_0] l.u.container_networking   : Determined main container network: lambda-container-image_default
2023-05-19T18:18:12.685 DEBUG --- [ge:$LATEST_0] l.u.c.container_client     : Getting ipv4 address for container localstack_main in network lambda-container-image_default.
2023-05-19T18:18:12.711  INFO --- [ge:$LATEST_0] l.u.container_networking   : Determined main container target IP: 172.24.0.2
2023-05-19T18:18:12.717 DEBUG --- [ge:$LATEST_0] l.s.a.i.docker_runtime_exe : Executing start docker executor pro-hook for function arn:aws:lambda:us-east-1:000000000000:function:localstack-lambda-container-image:$LATEST
2023-05-19T18:18:12.723 DEBUG --- [ge:$LATEST_0] l.u.c.docker_sdk_client    : Creating container with attributes: {'mount_volumes': None, 'ports': None, 'cap_add': None, 'cap_drop': None, 'security_opt': None, 'dns': None, 'additional_flags': '', 'workdir': None, 'privileged': None, 'labels': None, 'ulimits': None, 'command': ['/lambda-entrypoint.sh', 'handler.handler'], 'detach': None, 'entrypoint': '/var/rapid/init', 'env_vars': {'AWS_DEFAULT_REGION': 'us-east-1', 'AWS_REGION': 'us-east-1', 'AWS_LAMBDA_FUNCTION_NAME': 'localstack-lambda-container-image', 'AWS_LAMBDA_FUNCTION_MEMORY_SIZE': 128, 'AWS_LAMBDA_FUNCTION_VERSION': '$LATEST', 'AWS_LAMBDA_INITIALIZATION_TYPE': 'on-demand', 'AWS_LAMBDA_LOG_GROUP_NAME': '/aws/lambda/localstack-lambda-container-image', 'AWS_LAMBDA_LOG_STREAM_NAME': '2023/05/19/[$LATEST]8deec8caaff7ff4728f572dfa534a3dd', 'AWS_ACCESS_KEY_ID': 'ASIAQAAAAAAAL6QCTGCI', 'AWS_SECRET_ACCESS_KEY': '5fyQlIrk3DGWd/v7N2fQaD9eQ9u2vKJfvImoMWWo', 'AWS_SESSION_TOKEN': 'FQoGZXIvYXdzEBYaDlMgKQAWM9XSRml9ZybtdOGyDc1lM+tyzq4aZ11C+VDFhlHkUHwdHobMR5ycpVKjiaj8zDRHSy71P30U8tC38wpFPOhQ8BJtL3M8qFpUDhXvwK4cLG8j4wkH3UwswrdVBnV+muL71DUA/8siQGZkPnmDfjCCX3iL8YvHVUUU9xIIwSo6Ki0cChtEimyO5itPLIEE8MWm7//N5o2fuweqQ8XFYY5Sp/80LT2U6niGqbHul2Kbw/bOGWNIghI4ctI+BZ8Sk0+7uo9wRr4StJO+b3QRcdPhMtHj5n0JQCel97C4s0RzTpanKKbdmhhxaANnaCnyAJJwKWSQxu0wtiI=', 'LAMBDA_TASK_ROOT': '/var/task', 'LAMBDA_RUNTIME_DIR': '/var/runtime', 'AWS_XRAY_CONTEXT_MISSING': 'LOG_ERROR', 'AWS_XRAY_DAEMON_ADDRESS': '127.0.0.1:2000', '_AWS_XRAY_DAEMON_PORT': '2000', '_AWS_XRAY_DAEMON_ADDRESS': '127.0.0.1', 'TZ': ':UTC', 'AWS_LAMBDA_FUNCTION_TIMEOUT': 3, 'LOCALSTACK_HOSTNAME': '172.24.0.2', 'EDGE_PORT': '443', 'AWS_ENDPOINT_URL': 'http://172.24.0.2:443', 'LOCALSTACK_RUNTIME_ID': '8deec8caaff7ff4728f572dfa534a3dd', 'LOCALSTACK_RUNTIME_ENDPOINT': 'http://172.24.0.2:443/_localstack_lambda/8deec8caaff7ff4728f572dfa534a3dd', '_HANDLER': 'handler.handler', 'LOCALSTACK_INIT_LOG_LEVEL': 'debug'}, 'image_name': 'localstack-lambda-container-image', 'interactive': None, 'name': 'localstack-main-lambda-localstack-lambda-container-image-8deec8caaff7ff4728f572dfa534a3dd', 'network': 'lambda-container-image_default', 'platform': 'linux/amd64', 'remove': None, 'self': <localstack.utils.container_utils.docker_sdk_client.SdkDockerClient object at 0xffffaa0d5d50>, 'tty': None, 'user': None}
2023-05-19T18:18:12.742 DEBUG --- [ge:$LATEST_0] l.u.c.docker_sdk_client    : Pulling Docker image: localstack-lambda-container-image
2023-05-19T18:18:14.644 DEBUG --- [ge:$LATEST_0] l.u.c.docker_sdk_client    : Stopping container: localstack-main-lambda-localstack-lambda-container-image-8deec8caaff7ff4728f572dfa534a3dd
2023-05-19T18:18:14.654 DEBUG --- [ge:$LATEST_0] l.s.a.i.runtime_environmen : Unable to shutdown runtime handler '8deec8caaff7ff4728f572dfa534a3dd'
2023-05-19T18:18:15.643 DEBUG --- [functhread71] l.s.a.i.version_manager    : Detected no active environments for version arn:aws:lambda:us-east-1:000000000000:function:localstack-lambda-container-image:$LATEST. Starting one...
2023-05-19T18:18:15.644 DEBUG --- [functhread71] l.s.a.i.version_manager    : Starting new environment
2023-05-19T18:18:15.645 DEBUG --- [functhread71] l.s.a.i.docker_runtime_exe : Creating service endpoint for function arn:aws:lambda:us-east-1:000000000000:function:localstack-lambda-container-image:$LATEST executor 6a683e5a634efeb345f3e2f2ab29c386
2023-05-19T18:18:15.645 DEBUG --- [functhread71] l.s.a.i.docker_runtime_exe : Finished creating service endpoint for function arn:aws:lambda:us-east-1:000000000000:function:localstack-lambda-container-image:$LATEST executor 6a683e5a634efeb345f3e2f2ab29c386
2023-05-19T18:18:15.645 DEBUG --- [functhread71] l.s.a.i.docker_runtime_exe : Assigning container name of localstack-main-lambda-localstack-lambda-container-image-6a683e5a634efeb345f3e2f2ab29c386 to executor 6a683e5a634efeb345f3e2f2ab29c386
2023-05-19T18:18:15.670  INFO --- [   asgi_gw_0] localstack.request.aws     : AWS sts.AssumeRole => 200