Missing tag "latest" on container images uploaded to ghcr.io

[echoix]

Describe the bug
A clear and concise description of what the bug is.

The container images stored on GitHub (ghcr.io) do not contain the latest tag. It is only possible to get a specific version tag.

To Reproduce
Steps to reproduce the behavior:

1. Run docker pull ghcr.io/mgechev/revive
2. See error

docker pull ghcr.io/mgechev/revive
Using default tag: latest
Error response from daemon: manifest unknown

3. See available packages on https://github.com/mgechev/revive/pkgs/container/revive

Expected behavior
A clear and concise description of what you expected to happen.
Be able to get the latest release with ghcr.io/mgechev/revive:latest

Logs
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. Ubuntu 18.04]
• Version of Go

Additional context
Add any other context about the problem here.

[echoix]

The solution would be to edit the release.yml https://github.com/mgechev/revive/blob/a4f4632a3f934868012008d36eecafb912282d45/.github/workflows/release.yml
in order to have another tag:

So change this:

dockers:
- image_templates: ["ghcr.io/mgechev/revive:{{ .Version }}"]
  dockerfile: Dockerfile
  build_flag_templates:
  - --label=org.opencontainers.image.title={{ .ProjectName }}
  - --label=org.opencontainers.image.description={{ .ProjectName }}
  - --label=org.opencontainers.image.url=https://github.com/mgechev/revive
  - --label=org.opencontainers.image.source=https://github.com/mgechev/revive
  - --label=org.opencontainers.image.version={{ .Version }}
  - --label=org.opencontainers.image.revision={{ .FullCommit }}
  - --label=org.opencontainers.image.licenses=MIT

To this:

dockers:
  - image_templates: 
    - "ghcr.io/mgechev/revive:{{ .Version }}"
    - "ghcr.io/mgechev/revive:latest"
    dockerfile: Dockerfile
    build_flag_templates:
      - --label=org.opencontainers.image.title={{ .ProjectName }}
      - --label=org.opencontainers.image.description={{ .ProjectName }}
      - --label=org.opencontainers.image.url=https://github.com/mgechev/revive
      - --label=org.opencontainers.image.source=https://github.com/mgechev/revive
      - --label=org.opencontainers.image.version={{ .Version }}
      - --label=org.opencontainers.image.revision={{ .FullCommit }}
      - --label=org.opencontainers.image.licenses=MIT

[chavacava]

Hi, @echoix thanks for filling the issue.
Your fix proposal seems OK, please make a PR.
à toi de jouer. a+