github.com/danp/terraform@v0.9.5-0.20170426144147-39d740081351/website/source/docs/providers/docker/d/registry_image.html.markdown (about)

     1  ---
     2  layout: "docker"
     3  page_title: "Docker: docker_registry_image"
     4  sidebar_current: "docs-docker-datasource-registry-image"
     5  description: |-
     6    Finds the latest available sha256 digest for a docker image/tag from a registry.
     7  ---
     8  
     9  # docker\_registry\_image
    10  
    11  -> **Note:** The initial (current) version of this data source can reliably read only **public** images **from the official Docker Hub Registry**.
    12  
    13  Reads the image metadata from a Docker Registry. Used in conjunction with the
    14  [docker\_image](/docs/providers/docker/r/image.html) resource to keep an image up
    15  to date on the latest available version of the tag.
    16  
    17  ## Example Usage
    18  
    19  ```hcl
    20  data "docker_registry_image" "ubuntu" {
    21    name = "ubuntu:precise"
    22  }
    23  
    24  resource "docker_image" "ubuntu" {
    25    name          = "${data.docker_registry_image.ubuntu.name}"
    26    pull_triggers = ["${data.docker_registry_image.ubuntu.sha256_digest}"]
    27  }
    28  ```
    29  
    30  ## Argument Reference
    31  
    32  The following arguments are supported:
    33  
    34  * `name` - (Required, string) The name of the Docker image, including any tags. e.g. `alpine:latest`
    35  
    36  ## Attributes Reference
    37  
    38  The following attributes are exported in addition to the above configuration:
    39  
    40  * `sha256_digest` (string) - The content digest of the image, as stored on the registry.