Legacy error after update from docker 3.0.2 -> 3.6.2: cannot locate Dockerfile

[mrstexx]

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Terraform (and docker Provider) Version

Terraform v1.14.3
on windows_amd64

• provider registry.terraform.io/hashicorp/archive v2.7.1
• provider registry.terraform.io/hashicorp/aws v5.100.0
• provider registry.terraform.io/hashicorp/local v2.6.1
• provider registry.terraform.io/hashicorp/null v3.2.4
• provider registry.terraform.io/hashicorp/random v3.7.2
• provider registry.terraform.io/kreuzwerker/docker v3.6.2

Affected Resource(s)

• docker_image

Terraform Configuration Files

terraform {
  required_providers {
    docker = {
      source  = "kreuzwerker/docker"
      version = "3.6.2"
    }
  }
}

# ... other config ...

resource "docker_image" "test1" {
  name = local.image_name

  build {
    # build from root directory because Docker has to copy ZIP file with source code
    context    = path.root
    dockerfile = "${path.module}/lambda/container_resources/Dockerfile.test1"
    platform   = "linux/amd64"
    no_cache   = true
  }

  depends_on = [module.test1.archive_base64sha256]

  triggers = {
    dockerfile   = filesha1("${path.module}/container_resources/Dockerfile.test1")
    requirements = filesha1("${path.module}/container_resources/requirements.test1.txt")
    source       = module.test1.archive_base64sha256
  }
}

Actual Behaviour

Error is returned:

Error: Error running legacy build: failed to read dockerfile: open lambda\container_resources\Dockerfile.test1: no such file or directory 

with module.lambda.docker_image.test1, on lambda\test1.tf line 52, in resource "docker_image" "test1":
52: resource "docker_image" "test1" {

What has been actually changed in the regard of context/dockerfile configuration?

I am able to build my docker image from the root folder by running:

docker buildx build -f "lambda/container_resources/Dockerfile.test1" --no-cache .

Steps to Reproduce

1. terraform apply

Important Factoids

Running on Windows 11 via Docker Desktop

This used to work on docker 3.0.2 but after updating to 3.6.2, legacy error is returned. The update was needed to solve the minimum docker engine API version 1.44 error. I tried with 3.3.0 as well (which is supposed the first version that solved docker compatibility issue).

[Junkern]

Thanks for the issue!

3.6.2 is a old release - Can you test with the 3.9.0 or even the new beta 4.0.0-beta1 to see if this still persists? I have done some more testing and upgrades to the context/dockerfile handling, so it should be fixed now.
The new versions are currently only available on opentofu through registry.opentofu.org/kreuzwerker/docker

[mrstexx]

Hi @Junkern!
Thanks for the answer. The latest version on terraform registry is still 3.6.2 so I am unable to test the latest version -> https://registry.terraform.io/providers/kreuzwerker/docker/latest

[Junkern]

Hey,

I know :)
That's why I wrote

The new versions are currently only available on opentofu through registry.opentofu.org/kreuzwerker/docker

terraform {
  required_providers {
    docker = {
      source = "registry.opentofu.org/kreuzwerker/docker"
      version = "~> 3.9.0" # or use newest beta version: 4.0.0-beta2
    }
  }
}