---------------------- The 403 Forbidden error when pushing an image to your ECR registry might be due to insufficient permissions. Here are some steps you can take to resolve this issue: 1. **Grant the necessary permissions**: Ensure that your service account has the right permissions to push to ECR. You can do this by adding the following policy to each of the repositories in the container registry that you want to use with in-cluster building:

json
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "AllowPushPull",
            "Effect": "Allow",
            "Principal": {
                "AWS": [
                    "arn:aws:iam::<account-id>:role/<k8s_worker_iam_role>"
                ]
            },
            "Action": [
                "ecr:BatchGetImage",
                "ecr:BatchCheckLayerAvailability",
                "ecr:CompleteLayerUpload",
                "ecr:GetDownloadUrlForLayer",
                "ecr:InitiateLayerUpload",
                "ecr:PutImage",
                "ecr:UploadLayerPart"
            ]
        }
    ]
}

Replace

<account-id>

and

<k8s_worker_iam_role>

with your AWS account ID and Kubernetes worker IAM role respectively. source () 2. **Use IRSA for fine-grained control**: If you need more fine-grained control, consider using IRSA (IAM Roles for Service Accounts). This allows you to reduce the ECR access from the worker nodes to read-only, and only provide push access to the in-cluster builder Pods. source ()

3. **Check your ImagePullSecret**: Ensure that you have correctly set up the

imagePullSecret

for your ECR repository. This secret should be correctly referenced in your Kubernetes provider configuration. source () If you continue to experience issues, you might want to check the AWS documentation for more information on granting developers permission to push and pull directly from a repository. source () ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

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