Runtime.HandlerNotFound Error when mountCode: true

[Edwin-Luijten]

I'm using localstack with a docker setup (localstrack-pro:latest), and when having mountCode:true in my plugin config the lambda container that is being spun up is unable to find the code. When disabled it executes fine but then code updates are not being propagated.

I added the fix of this pull request: #215 locally.
I'm also using serverless-esbuild.

serverless.yaml

```yaml service: cms-api configValidationMode: error provider: stackName: ${env:STACK_NAME, 'serverless-framework'}-sls-middleware name: aws runtime: nodejs18.x stage: local region: ${env:AWS_DEFAULT_REGION, 'eu-central-1'} environment: ${file(./serverless.yml):provider.environment} apiGateway: binaryMediaTypes: - '*/*' restApiId: !Ref ApiGateway restApiRootResourceId: 'Fn::GetAtt': - ApiGateway - RootResourceId plugins: - serverless-esbuild - serverless-localstack custom: stage: local esbuild: bundle: true minify: false keepOutputDirectory: true outputFileExtension: .mjs format: esm target: "esnext" platform: "node" exclude: ["aws-sdk"] banner: js: import { createRequire } from 'module';const require = createRequire(import.meta.url); localstack: debug: true edgePort: 4566 autostart: false stages: [ local ] lambda: mountCode: true functions: api: ${file(./serverless.yml):functions.api} resources: Resources: DynamoDBTableCMS: ${file(./serverless.yml):resources.Resources.DynamoDBTableCMS} ApiGateway: Type: AWS::ApiGateway::RestApi Properties: Name: ApiGateway Tags: - Key: _custom_id_ Value: cms-api ```

docker-compose.yaml

```yaml version: "3" services: localstack: container_name: "api-localstack" build: context: ./docker/localstack ports: - "127.0.0.1:4566:4566" # LocalStack Gateway - "127.0.0.1:4510-4559:4510-4559" # external services port range - "127.0.0.1:53:53" # DNS config (only required for Pro) - "127.0.0.1:53:53/udp" # DNS config (only required for Pro) - "127.0.0.1:443:443" # LocalStack HTTPS Gateway (only required for Pro) working_dir: / environment: - SERVICES=lambda,s3,sqs,iam,apigateway,dynamodb # SERVICES variable is ignored if EAGER_SERVICE_LOADING=0 - LS_LOG=debug - PERSISTENCE=1 - BUCKET_MARKER_LOCAL=hot-reload - LOCALSTACK_API_KEY={redacted} # only required for Pro - DOCKER_HOST=unix:///var/run/docker.sock - STACK_NAME=api - ENVIRONMENT=local - DYNAMODB_SHARE_DB=1 volumes: - "./docker/localstack/volume:/var/lib/localstack" - "/var/run/docker.sock:/var/run/docker.sock" - "./:/app" ```

When the errors happens it keeps re spawning the lambda container until I stop it.

Logs

**api-localstack** | 2023-03-31T08:56:57.475 DEBUG --- [pi:$LATEST_0] l.u.c.docker_sdk_client : Creating container with attributes: {'mount_volumes': , 'ports': None, 'cap_add': None, 'cap_drop': None, 'security_opt': None, 'dns': '127.0.0.1', 'additional_flags': '', 'workdir': None, 'privileged': None, 'labels': None, 'ulimits': None, 'command': None, 'detach': None, 'entrypoint': '/var/rapid/init', 'env_vars': {'AWS_DEFAULT_REGION': 'us-east-1', 'AWS_REGION': 'us-east-1', 'AWS_LAMBDA_FUNCTION_NAME': 'api-local-api', 'AWS_LAMBDA_FUNCTION_MEMORY_SIZE': 1024, 'AWS_LAMBDA_FUNCTION_VERSION': '$LATEST', 'AWS_LAMBDA_INITIALIZATION_TYPE': 'on-demand', 'AWS_LAMBDA_LOG_GROUP_NAME': '/aws/lambda/api-local-api', 'AWS_LAMBDA_LOG_STREAM_NAME': '2023/03/31/[$LATEST]0af9cbe7a820c0ba0db5030e64e1a184', 'AWS_ACCESS_KEY_ID': 'ASIAQAAAAAAADD2Y7UJJ', 'AWS_SECRET_ACCESS_KEY': 'yKdyaQMgFPFCyBv4nPtbiWaYIjrsvq3cV1gPFSl8', 'AWS_SESSION_TOKEN': 'FQoGZXIvYXdzEBYaD/DkcwdRjXJnysJVWiDvT8it86Tfw38AdeGKjio0Af69yx/ZcohR60kbG1Gu07EkxZO/j/s864mi/lgO5ktQrb4XVSn5GlB7gAU4Q2JOmlVCTaTXcnAvbix42UMVfkOfKHp6Prvl9yxB2aPqoy8Z2hXrr3vRAHcWwE9rFYVXn7lTDSCBfb8rLyB19Qfrhnqn35yK4URyJVgVsjHzqp0EtZvxOgSirgSo7U9OJRH/c4luhx3BxOcfyqBKKf3zxRILTx1z8VAT4QTfs7zhMJwpo+1AqWeYByodRP7XUtlRCLwts6nqdlomBDq7DzYdjJSRjSbpgRREFJGMxkDD3xE=', 'LAMBDA_TASK_ROOT': '/var/task', 'LAMBDA_RUNTIME_DIR': '/var/runtime', 'AWS_XRAY_CONTEXT_MISSING': 'LOG_ERROR', 'AWS_XRAY_DAEMON_ADDRESS': '127.0.0.1:2000', '_AWS_XRAY_DAEMON_PORT': '2000', '_AWS_XRAY_DAEMON_ADDRESS': '127.0.0.1', 'TZ': ':UTC', 'AWS_LAMBDA_FUNCTION_TIMEOUT': 6, 'LOCALSTACK_HOSTNAME': '172.30.0.2', 'EDGE_PORT': '443', 'AWS_ENDPOINT_URL': 'http://172.30.0.2:443', 'LOCALSTACK_RUNTIME_ID': '0af9cbe7a820c0ba0db5030e64e1a184', 'LOCALSTACK_RUNTIME_ENDPOINT': 'http://172.30.0.2:443/_localstack_lambda/0af9cbe7a820c0ba0db5030e64e1a184', '_HANDLER': '.esbuild/.build/src/handler/http.handle', 'AWS_EXECUTION_ENV': 'Aws_Lambda_nodejs18.x', 'ENVIRONMENT': 'local', 'LOCALSTACK_HOT_RELOADING_PATHS': '/var/task', 'LOCALSTACK_ENABLE_DNS_SERVER': '1', 'NODE_TLS_REJECT_UNAUTHORIZED': '0'}, 'image_name': 'public.ecr.aws/lambda/nodejs:18', 'interactive': None, 'name': 'api-localstack-lambda-api-local-api-0af9cbe7a820c0ba0db5030e64e1a184', 'network': 'cms_api_default', 'platform': 'linux/amd64', 'remove': None, 'self': , 'tty': None, 'user': None} **api-localstack** | 2023-03-31T08:56:57.518 DEBUG --- [pi:$LATEST_0] localstack.packages.api : Installation of awslambda-runtime skipped (already installed). **api-localstack** | 2023-03-31T08:56:57.518 DEBUG --- [pi:$LATEST_0] l.u.c.docker_sdk_client : Copying file /var/lib/localstack/lib/awslambda-runtime/v0.1.16-pre/x86_64/. into api-localstack-lambda-api-local-api-0af9cbe7a820c0ba0db5030e64e1a184:/ **api-localstack** | 2023-03-31T08:56:57.824 DEBUG --- [pi:$LATEST_0] l.u.c.docker_sdk_client : Starting container api-localstack-lambda-api-local-api-0af9cbe7a820c0ba0db5030e64e1a184 **api-localstack** | 2023-03-31T08:56:57.827 DEBUG --- [ asgi_gw_0] l.u.c.docker_sdk_client : Removing container: api-localstack-lambda-api-local-api-9de9563801ea86a2fc7cb199626b3200 **api-localstack** | 2023-03-31T08:56:57.946 INFO --- [ asgi_gw_0] localstack.request.http : POST /_localstack_lambda/9de9563801ea86a2fc7cb199626b3200/status/9de9563801ea86a2fc7cb199626b3200/error => 202 **api-localstack** | 2023-03-31T08:56:58.250 DEBUG --- [pi:$LATEST_0] l.u.c.container_client : Getting ipv4 address for container api-localstack-lambda-api-local-api-0af9cbe7a820c0ba0db5030e64e1a184 in network cms_api_default. **api-localstack** | 2023-03-31T08:56:58.421 WARN --- [ asgi_gw_0] l.s.a.i.executor_endpoint : Execution environment startup failed: {"errorType":"Runtime.HandlerNotFound","errorMessage":".esbuild/.build/src/handler/http.handle is undefined or not exported","trace":["Runtime.HandlerNotFound: .esbuild/.build/src/handler/http.handle is undefined or not exported"," at UserFunction.js.module.exports.load (file:///var/runtime/index.mjs:1035:15)"," at async start (file:///var/runtime/index.mjs:1195:23)"," at async file:///var/runtime/index.mjs:1201:1"]} **api-localstack** | 2023-03-31T08:56:58.421 DEBUG --- [ asgi_gw_0] l.u.c.docker_sdk_client : Stopping container: api-localstack-lambda-api-local-api-0af9cbe7a820c0ba0db5030e64e1a184

Screenshot of the built code:  Screenshot of the lambda on app.localstack.cloud (this is with mountCode: false)  Screenshot of the lambda on app.localstack.cloud ( this is with mountCode: true)