AWS CDK and AWS CodePipeline

Question

Hello, I'm creating an infrastructure in AWS with a Dynamo table and some lambdas for a "CRUD" functionality. The lambdas simply allow adding records, deleting, querying, etc. (I don't include all of them as they are not related to the issue and it makes the code easier to read).

However, when I add the code for AWS CodePipeline, I encounter the following error:

```
[Container] 2023/05/23 13:00:26 Command did not exit successfully npx cdk synth exit status 1
[Container] 2023/05/23 13:00:26 Phase complete: BUILD State: FAILED
[Container] 2023/05/23 13:00:26 Phase context status code: COMMAND_EXECUTION_ERROR Message: Error while executing command: npx cdk synth. Reason: exit status 1
```

How could I solve it? I'm new in AWS and I'm quite disoriented. The code in the lib folder I'm using is:

```
  const nuevoRegistroFunction = new lambda.Function(this, "NuevoRegistroFunction", {
      runtime: lambda.Runtime.NODEJS_14_X,
      handler: 'handler.nuevoRegistro', 
      code: lambda.Code.fromAsset(path.resolve(__dirname, 'lambda')),
      environment: {
        TABLA_REGISTROS: tablaRegistros.tableName,
      },
    });

tablaRegistros.grantReadWriteData(nuevoRegistroFunction);

const registrosAPI = new apigw.RestApi(this, "RegistrosApi");

registrosAPI.root
      .resourceForPath("registros")
      .addMethod("PUT", new apigw.LambdaIntegration(nuevoRegistroFunction))
  
    new CodePipeline(this, 'Pipeline', {
      pipelineName: 'TestPipeline',
      synth: new ShellStep('Synth', {
        input: CodePipelineSource.gitHub('ivozmediano/microservicios', 'main'),
        commands: [
                    'npm ci',
                    'npm run build',
                    'npx cdk synth',
                  ]
      }),
    });
  }
}
```

Thanks a lot!

Answer

Since a Docker container is used to build Lambda, it is necessary to set "dockerEnabledForSynth: true" to enable privileged mode during build.  
https://docs.aws.amazon.com/cdk/api/v1/docs/@aws-cdk_pipelines.CodePipeline.html

So I thought this is how it would look as a code.  
Note that "dockerEnabledForSelfMutation: true" must also be added if Docker image Assets are used on CDK Pipelines.  
```
    new CodePipeline(this, 'Pipeline', {
      pipelineName: 'TestPipeline',
      synth: new ShellStep('Synth', {
        input: CodePipelineSource.gitHub('ivozmediano/microservicios', 'main'),
        commands: [
                    'npm ci',
                    'npm run build',
                    'npx cdk synth',
                  ]
      }),
      dockerEnabledForSynth: true
    });
  }
}
```

AWS CDK and AWS CodePipeline

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