Remove the default value of container's log_driver and set `Computed: true`

[suzuki-shunsuke]

Terraform Version

Run terraform -v to show the version. If you are not running the latest version of Terraform, please upgrade because your issue may have already been fixed.

v0.12.26

Affected Resource(s)

• docker_container

Terraform Configuration Files

provider "docker" {
  version = "2.7.0"
}

resource "docker_image" "nginx" {
    name = "nginx"
}

resource "docker_container" "nginx" {
  image    = docker_image.nginx.latest
  name     = "nginx"
  restart  = "on-failure"
  must_run = "true"
}

Expected Behavior

When log-driver is set to none in the Docker daemon's configuration daemon.json, created container's log driver should be none.

https://docs.docker.com/config/containers/logging/configure/#configure-the-default-logging-driver

daemon.json

{
  "log-driver": "none"
}

Actual Behavior

Created container's log driver is json-file bacause log_driver's default value is json-file.

Steps to Reproduce

Please list the steps required to reproduce the issue, for example:

1. terraform apply

$ terraform apply
$ docker inspect nginx # check LogConfig.

How to fix

Remove the default value of container's log_driver and set Computed: true.

[suzuki-shunsuke]

I have created a pull request to fix this issue. https://github.com/terraform-providers/terraform-provider-docker/pull/269

[mavogel]

Closed by #269