title: how to use github actions to deploy an image that is in tar.gz form
body: <p>i had a container that i built into an image, and compressed into a .tar.gz with a different name.  so, my image was postgres/db:1 - and i saved it as pga.tar.gz in my respository.</p>
  <p>i am trying to use github actions to get it into my digital ocean registry.</p>
  <p>it seems like the unzip worked..but i'm getting hung up on the tag:</p>
  <pre><code>Run docker tag pga registry.digitalocean.com/abda-containers/abd_db1:77
  Error response from daemon: No such image: pga:latest
  Error: Process completed with exit code 1.
  </code></pre>
  <p>i've tried every combination, and it won't work...so, i'm thinking maybe it didnt unzip right??</p>
  <pre><code>name: unzip and publish to DO
  
  on:
    workflow_dispatch:
      inputs:
        version:
          description: 'Image version'
          required: true
  
  jobs:
    build_and_push:
      runs-on: ubuntu-latest
      steps:
        - name: Checkout the repo 
          uses: actions/checkout@v2
        - name: Unzip image 
          run: tar -zxvf pga.tar.gz
        - name: Install doctl
          uses: digitalocean/action-doctl@v2
          with:
            token: ${{ secrets.DIGITALOCEAN_ACCESS_TOKEN }}
        - name: Log in to DO Container Registry 
          run: doctl registry login --expiry-seconds 600
        - name: Tag image 
          run:
            docker tag pga/
            registry.digitalocean.com/abda-containers/abd_db1:${{github.event.inputs.version }}
        - name: Push image to DO Container Registry 
          run: docker push registry.digitalocean.com/abda-containers/abd_db1:${{ github.event.inputs.version }}
  </code></pre>