SAM to deploy Image-Based Lambda

Question

**My Question:**  Can you create an ECR repository and an Image-backed lambda from a Dockerfile from my local via SAM without the need to build the image and upload it first outside of SAM? I was hoping I could define my Dockerfile, the relative file paths, and SAM would handle the rest.

**Context:**
I want to use SAM to manage an ECR repository and the Docker image that will back a lambda function.  I have attempted a combination of configurations in the SAM template including:

- defining the ECR repository
- using the Metadata to point to the Dockerfile that sits alongside the Lambda function (python)
- Specifying the ImageURI
- Specifying CodeURI

The error appears to be related to the fact that the image is not being added to ECR.  Naturally, SAM rolls back the deploy, so I am trying to figure out where things are falling over.

Kidd Ip · Answer

Yes, you can create an ECR repository and deploy an image-backed Lambda function directly from a Dockerfile without manually building and uploading the image outside of SAM, below the sample about SAM template of Dockerfile base on Yaml:

```
Resources:
  MyLambdaFunction:
    Type: AWS::Serverless::Function
    Properties:
      PackageType: Image
      ImageConfig:
        Command: ["app.lambda_handler"]
      MemorySize: 512
      Timeout: 10
    Metadata:
      Dockerfile: Dockerfile
      DockerContext: ./path-to-docker-context
      DockerTag: latest
```

SAM to deploy Image-Based Lambda

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