Terraform: Lambda Change Based On Image Change - aws-lambda

Question

I'm trying to create a Lambda with Terraform based on an docker image and I want that Lambda to get pushed every time I create a new image. I'm trying to use depends_on inside lambda, but it doesn't work, Lambda just stay in the same state as before. Any other solution or any way to make it work?
This is the code I have right now:
resource "docker_registry_image" "registry_image" {
name = docker_image.image.name
triggers = {
dir_sha1 = sha1(join("", [for f in fileset("../AWS/", "**") : filesha1("../AWS/${f}")]))
}
}
resource "docker_image" "image" {
name = "${aws_ecr_repository.repo.repository_url}:latest"
triggers = {
dir_sha1 = sha1(join("", [for f in fileset("../AWS/", "**") : filesha1("../AWS/${f}")]))
}
build {
context = "../AWS/"
dockerfile = "Dockerfile"
}
}
resource "aws_ecr_repository" "repo" {
name = "repo"
force_delete = true
}
resource "aws_ecr_repository_policy" "repo_policy" {
repository = aws_ecr_repository.repo.name
policy = <<EOF
{
"Version": "2008-10-17",
"Statement": [
{
"Sid": "Set the permission for ECR",
"Effect": "Allow",
"Principal": "*",
"Action": [
"ecr:BatchCheckLayerAvailability",
"ecr:BatchGetImage",
"ecr:CompleteLayerUpload",
"ecr:GetDownloadUrlForLayer",
"ecr:GetLifecyclePolicy",
"ecr:InitiateLayerUpload",
"ecr:PutImage",
"ecr:UploadLayerPart"
]
}
]
}
EOF
}
resource "aws_lambda_function" "lambda1" {
depends_on = [docker_image.image]
function_name = "lambda1"
role = aws_iam_role.lambda_role.arn
image_uri = "${aws_ecr_repository.repo.repository_url}:latest"
image_config {
command = ["lambda1.handler"]
working_directory = "/var/task"
}
package_type = "Image"
memory_size = 2048 # Min 128 MB and the Max 10,240 MB, there are some files of 300 MB
timeout = 180
environment {
variables = {
TZ = "Europe/Madrid"
}
}
}
Update
It seems that it is a issue of Amazon CDK. I recommend you to read
this thread: updating-lambda-using-cdk-doesnt-deploy-latest-image.