# Update an ECS Service

## Update the docker image for a service

The goal of this section is to show how you can update the docker image for an ECS service, after you have built that image. This task can be achieved using the [duplocloud/actions/update-image](https://github.com/duplocloud/actions/tree/main/update-image) action.

### Example Workflow

This example makes some assumptions:

* Your workflow already has a `build` job - we created one in the previous section
* Your `build` job declares an output named `image` - also done in the previous section

To use it you will need to ensure your GHA Environment has the following:

* `DUPLO_HOST` env var
* `DUPLO_TENANT` env var
* `DUPLO_TOKEN` env var

You need to change the service name below from `my-service` to the name of your actual service.

<pre class="language-yaml"><code class="lang-yaml">name: Update Service

on: 
  workflow_dispatch:
    inputs:
      environment:
        description: The environment to deploy to
        type: environment
        default: dev
        required: true
      image:
        description: The full image
        type: string
        required: true

jobs:
  update_service:
    name: Update Service
    runs-on: ubuntu-latest
    environment: 
      name: ${{ inputs.environment }}
    env:
      DUPLO_TOKEN: ${{ secrets.DUPLO_TOKEN }}
      DUPLO_HOST: ${{ vars.DUPLO_HOST  }}
      DUPLO_TENANT: ${{ vars.DUPLO_TENANT }}
    steps: 
    
    # install and login to the cloud
    - name: Duplo Setup
      uses: <a data-footnote-ref href="#user-content-fn-1">duplocloud/actions@v0.0.12</a>
      # only required on gcp and azure
      with:
        account-id: ${{ vars.CLOUD_ACCOUNT }}
        credentials: ${{ secrets.CLOUD_CREDENTIALS }}

    # uses duploctl from above
    - name: Update Service
      uses: duplocloud/actions/update-image@v0.0.5
      with:
        name: my-service
        image: ${{ inputs.image }}
        type: ecs
</code></pre>

[^1]: <https://github.com/duplocloud/actions>