Bug: sam build shows Error: 500 Server Error for

[lufia]

Description:

I have an issue with sam build.

Error: 500 Server Error for http+docker://localhost/v1.35/build?t=mylambdafunction%3Alatest&q=False&nocache=False&rm=True&forcerm=False&pull=False&dockerfile=.&platform=linux%2Famd64: Internal Server Error ("unexpected error reading Dockerfile: read /var/lib/docker/tmp/docker-builder1007095826: is a directory")

It is very similar to #6308 but the error message, maybe errno, is differ.

Steps to reproduce:

I can reproduce this with two files.

1. Dockerfile

FROM	postgres:15

2. template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31

Resources:
  MyLambdaFunction:
    Type: AWS::Serverless::Function
    Properties:
      PackageType: Image
      Architectures:
        - x86_64
      Events:
        MyAPI:
          Type: Api
          Properties:
            Path: /
            Method: GET
    Metadata:
      DockerContext: .
      Dockerfile: .

Outputs:
  ApiURL:
    Description: URL of the API
    Value: !GetAtt ApiURL.Arn

Observed result:

$ sam build --debug

2024-09-25 00:41:12,786 | No config file found in this directory.
2024-09-25 00:41:12,786 | OSError occurred while reading TOML file: [Errno 2] No such file or directory: '/home/lufia/Downloads/sam/xx/samconfig.toml'
2024-09-25 00:41:12,786 | Config file location: /home/lufia/Downloads/sam/xx/samconfig.toml
2024-09-25 00:41:12,786 | Config file '/home/lufia/Downloads/sam/xx/samconfig.toml' does not exist
2024-09-25 00:41:12,787 | Using SAM Template at /home/lufia/Downloads/sam/xx/template.yaml
2024-09-25 00:41:12,800 | OSError occurred while reading TOML file: [Errno 2] No such file or directory: '/home/lufia/Downloads/sam/xx/samconfig.toml'
2024-09-25 00:41:12,800 | Using config file: samconfig.toml, config environment: default
2024-09-25 00:41:12,800 | Expand command line arguments to:
2024-09-25 00:41:12,800 | --template_file=/home/lufia/Downloads/sam/xx/template.yaml --mount_with=READ --build_dir=.aws-sam/build --cache_dir=.aws-sam/cache 
2024-09-25 00:41:12,824 | 'build' command is called
2024-09-25 00:41:12,825 | No Parameters detected in the template
2024-09-25 00:41:12,862 | There is no customer defined id or cdk path defined for resource MyLambdaFunction, so we will use the resource logical id as the resource id
2024-09-25 00:41:12,862 | There is no customer defined id or cdk path defined for resource ServerlessRestApi, so we will use the resource logical id as the resource id
2024-09-25 00:41:12,863 | 0 stacks found in the template
2024-09-25 00:41:12,863 | No Parameters detected in the template
2024-09-25 00:41:12,874 | There is no customer defined id or cdk path defined for resource MyLambdaFunction, so we will use the resource logical id as the resource id
2024-09-25 00:41:12,874 | There is no customer defined id or cdk path defined for resource ServerlessRestApi, so we will use the resource logical id as the resource id
2024-09-25 00:41:12,874 | 2 resources found in the stack 
2024-09-25 00:41:12,874 | Found Serverless function with name='MyLambdaFunction' and ImageUri='None'
2024-09-25 00:41:12,874 | --base-dir is not presented, adjusting uri . relative to /home/lufia/Downloads/sam/xx/template.yaml
2024-09-25 00:41:12,874 | --base-dir is not presented, adjusting uri . relative to /home/lufia/Downloads/sam/xx/template.yaml
2024-09-25 00:41:12,875 | 2 resources found in the stack 
2024-09-25 00:41:12,876 | Found Serverless function with name='MyLambdaFunction' and ImageUri='None'
2024-09-25 00:41:12,876 | Error occurred while trying to track an event: Event 'BuildFunctionRuntime' does not accept value 'None'.
2024-09-25 00:41:12,876 | Instantiating build definitions
2024-09-25 00:41:12,877 | Unique function build definition found, adding as new (Function Build Definition: BuildDefinition(None, /home/lufia/Downloads/sam/xx, Image, , a5fae4d6-a071-48f5-b7c9-1b2500452402, {'DockerContext': '/home/lufia/Downloads/sam/xx', 'Dockerfile': '.'}, {}, x86_64, []), Function: Function({'function_id': 'MyLambdaFunction', 'name': 'MyLambdaFunction', 'functionname': 'MyLambdaFunction', 'runtime': None, 'memory': None, 'timeout': None, 'handler': None, 'imageuri': None, 'packagetype': 'Image', 'imageconfig': None, 'codeuri': '/home/lufia/Downloads/sam/xx', 'environment': None, 'rolearn': None, 'layers': [], 'events': {'MyAPI': {'Type': 'Api', 'Properties': {'Path': '/', 'Method': 'GET', 'RestApiId': 'ServerlessRestApi'}}}, 'metadata': {'DockerContext': '/home/lufia/Downloads/sam/xx', 'Dockerfile': '.', 'SamResourceId': 'MyLambdaFunction'}, 'inlinecode': None, 'codesign_config_arn': None, 'architectures': ['x86_64'], 'function_url_config': None, 'function_build_info': <FunctionBuildInfo.BuildableImage: ('BuildableImage', 'Regular IMAGE function which can be build with SAM CLI')>, 'stack_path': '', 'runtime_management_config': None, 'logging_config': None}))
2024-09-25 00:41:12,878 | Building codeuri: /home/lufia/Downloads/sam/xx runtime: None architecture: x86_64 functions: MyLambdaFunction
2024-09-25 00:41:12,878 | Building to following folder /home/lufia/Downloads/sam/xx/.aws-sam/build/MyLambdaFunction
2024-09-25 00:41:12,878 | Building image for MyLambdaFunction function
2024-09-25 00:41:12,880 | Setting DockerBuildArgs for MyLambdaFunction function
2024-09-25 00:41:12,886 | Telemetry endpoint configured to be https://aws-serverless-tools-telemetry.us-west-2.amazonaws.com/metrics
2024-09-25 00:41:12,891 | Telemetry endpoint configured to be https://aws-serverless-tools-telemetry.us-west-2.amazonaws.com/metrics
2024-09-25 00:41:12,891 | Unable to find Click Context for getting session_id.
2024-09-25 00:41:12,891 | Sending Telemetry: {'metrics': [{'commandRun': {'requestId': '30387b61-b8b6-43b9-abc4-c82d9a621f05', 'installationId': 'af4e5d08-e36d-4473-9826-fa2fe9740cfb', 'sessionId': 'cabca648-cde9-48f1-94da-090578f6bd16', 'executionEnvironment': 'CLI', 'ci': False, 'pyversion': '3.11.10', 'samcliVersion': '1.124.0', 'awsProfileProvided': False, 'debugFlagProvided': True, 'region': '', 'commandName': 'sam build', 'metricSpecificAttributes': {'projectType': 'CFN', 'gitOrigin': None, 'projectName': '5dde896887f6754c9b15bfe3a441ae4806df2fde94001311e08bf110622e0bbe', 'initialCommit': None}, 'duration': 86, 'exitReason': 'APIError', 'exitCode': 255}}]}
2024-09-25 00:41:12,891 | Sending Telemetry: {'metrics': [{'events': {'requestId': '74b7cc08-358e-4012-817b-1f7989f1bd3f', 'installationId': 'af4e5d08-e36d-4473-9826-fa2fe9740cfb', 'sessionId': 'cabca648-cde9-48f1-94da-090578f6bd16', 'executionEnvironment': 'CLI', 'ci': False, 'pyversion': '3.11.10', 'samcliVersion': '1.124.0', 'commandName': 'sam build', 'metricSpecificAttributes': {'events': [{'event_name': 'SamConfigFileExtension', 'event_value': '.toml', 'thread_id': '12aeb39af1e94a01be28a684b6386580', 'time_stamp': '2024-09-24 15:41:12.786', 'exception_name': None}, {'event_name': 'SamConfigFileExtension', 'event_value': '.toml', 'thread_id': '5add3ea0cbd94edfbe284fcc766638f7', 'time_stamp': '2024-09-24 15:41:12.800', 'exception_name': None}]}}}]}
2024-09-25 00:41:13,349 | HTTPSConnectionPool(host='aws-serverless-tools-telemetry.us-west-2.amazonaws.com', port=443): Read timed out. (read timeout=0.1)
2024-09-25 00:41:13,352 | HTTPSConnectionPool(host='aws-serverless-tools-telemetry.us-west-2.amazonaws.com', port=443): Read timed out. (read timeout=0.1)

Error: 500 Server Error for http+docker://localhost/v1.35/build?t=mylambdafunction%3Alatest&q=False&nocache=False&rm=True&forcerm=False&pull=False&dockerfile=.&platform=linux%2Famd64: Internal Server Error ("unexpected error reading Dockerfile: read /var/lib/docker/tmp/docker-builder3124676323: is a directory")
Traceback:
  File "click/core.py", line 1078, in main
  File "click/core.py", line 1688, in invoke
  File "click/core.py", line 1434, in invoke
  File "click/core.py", line 783, in invoke
  File "samcli/cli/cli_config_file.py", line 347, in wrapper
  File "click/decorators.py", line 92, in new_func
  File "click/core.py", line 783, in invoke
  File "samcli/lib/telemetry/metric.py", line 185, in wrapped
  File "samcli/lib/telemetry/metric.py", line 150, in wrapped
  File "samcli/lib/utils/version_checker.py", line 43, in wrapped
  File "samcli/cli/main.py", line 95, in wrapper
  File "samcli/commands/build/command.py", line 169, in cli
  File "samcli/commands/build/command.py", line 258, in do_cli
  File "samcli/commands/build/build_context.py", line 284, in run
  File "samcli/lib/build/app_builder.py", line 226, in build
  File "samcli/lib/build/build_strategy.py", line 83, in build
  File "samcli/lib/build/build_strategy.py", line 93, in _build_functions
  File "samcli/lib/build/build_strategy.py", line 167, in build_single_function_definition
  File "samcli/lib/build/app_builder.py", line 671, in _build_function
  File "samcli/lib/build/app_builder.py", line 429, in _build_lambda_image
  File "docker/models/images.py", line 302, in build
  File "docker/utils/json_stream.py", line 60, in split_buffer
  File "docker/utils/json_stream.py", line 16, in stream_as_text
  File "docker/api/client.py", line 374, in _stream_helper
  File "docker/api/client.py", line 281, in _result
  File "docker/api/client.py", line 277, in _raise_for_status
  File "docker/errors.py", line 39, in create_api_error_from_http_exception

An unexpected error was encountered while executing "sam build".
Search for an existing issue:
https://github.com/aws/aws-sam-cli/issues?q=is%3Aissue+is%3Aopen+Bug%3A%20sam%20build%20-%20APIError
Or create a bug report:
https://github.com/aws/aws-sam-cli/issues/new?template=Bug_report.md&title=Bug%3A%20sam%20build%20-%20APIError

Expected result:

No errors.

Additional environment details (Ex: Windows, Mac, Amazon Linux etc)

1. OS: Arch Linux
2. sam --version: SAM CLI, version 1.124.0
3. AWS region: not set

{
  "version": "1.124.0",
  "system": {
    "python": "3.11.10",
    "os": "Linux-6.10.10-arch1-1-x86_64-with-glibc2.40"
  },
  "additional_dependencies": {
    "docker_engine": "27.2.1",
    "aws_cdk": "Not available",
    "terraform": "1.9.6"
  },
  "available_beta_feature_env_vars": [
    "SAM_CLI_BETA_FEATURES",
    "SAM_CLI_BETA_BUILD_PERFORMANCE",
    "SAM_CLI_BETA_TERRAFORM_SUPPORT",
    "SAM_CLI_BETA_RUST_CARGO_LAMBDA"
  ]
}

Add --debug flag to command you are running

[lufia]

I noticed I have wrong above YAML config.

Dockerfile: parameter expects a filename but I specified to "." directory.

[github-actions]

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