I've reworked the Docker workflow a little. I started just planning to add a push to GHCR, then the rest happened 😅

• Add Docker image labels & annotations — This is useful for machine-readability (e.g. dependency management tools and more) and generally a good practice.
• Add push to GitHub Container Registry (GHCR) — This would be super nice to have, especially given that Docker Hub has recently even further decreased their pulls/hr allowance.
• Add additional image tags (e.g. an image for release v3.0.4 would have tags latest, v3.0.4, 3.0.4, 3.0, 3).
• Add caching via GitHub Actions cache — This should make image builds a lot faster.
• Some basic refactoring. More could be done to reduce to a single instance of docker/build-push-action, but I didn't want to make this too disruptive.

I ran some simple tests using act to see what the results of the docker/metadata-action would look like for each trigger.

The results look good as far as I'm concerned, however this does break the workflow_dispatch trigger insofar as no tags are generated for such events. As far as I can see this shouldn't be necessary, but I'm not sure specifically how, or even if you were using this trigger before, so let me know if this is a problem for you.

• schedule:

  {
    "tags": [
      "tigattack/scanservjs:staging",
      "ghcr.io/tigattack/scanservjs:staging"
    ],
    "labels": {
      "org.opencontainers.image.created": "2025-03-12T16:16:54.031Z",
      "org.opencontainers.image.description": "SANE scanner nodejs web ui",
      "org.opencontainers.image.licenses": "GPL-2.0",
      "org.opencontainers.image.revision": "8d0588f6c5886ed3783853d06ece36b834c3d61f",
      "org.opencontainers.image.source": "https://github.com/tigattack/scanservjs",
      "org.opencontainers.image.title": "scanservjs",
      "org.opencontainers.image.url": "https://github.com/tigattack/scanservjs",
      "org.opencontainers.image.version": "staging"
    },
    "annotations": [
      "manifest:org.opencontainers.image.created=2025-03-12T16:16:54.031Z",
      "manifest:org.opencontainers.image.description=SANE scanner nodejs web ui",
      "manifest:org.opencontainers.image.licenses=GPL-2.0",
      "manifest:org.opencontainers.image.revision=8d0588f6c5886ed3783853d06ece36b834c3d61f",
      "manifest:org.opencontainers.image.source=https://github.com/tigattack/scanservjs",
      "manifest:org.opencontainers.image.title=scanservjs",
      "manifest:org.opencontainers.image.url=https://github.com/tigattack/scanservjs",
      "manifest:org.opencontainers.image.version=staging"
    ]
  }

• release trigger with mocked event data:

  {
    "tags": [
      "tigattack/scanservjs:v3.0.4",
      "tigattack/scanservjs:3.0.4",
      "tigattack/scanservjs:3.0",
      "tigattack/scanservjs:3",
      "tigattack/scanservjs:latest",
      "ghcr.io/tigattack/scanservjs:v3.0.4",
      "ghcr.io/tigattack/scanservjs:3.0.4",
      "ghcr.io/tigattack/scanservjs:3.0",
      "ghcr.io/tigattack/scanservjs:3",
      "ghcr.io/tigattack/scanservjs:latest"
    ],
    "labels": {
      "org.opencontainers.image.created": "2025-03-12T16:16:21.098Z",
      "org.opencontainers.image.description": "SANE scanner nodejs web ui",
      "org.opencontainers.image.licenses": "GPL-2.0",
      "org.opencontainers.image.revision": "8d0588f6c5886ed3783853d06ece36b834c3d61f",
      "org.opencontainers.image.source": "https://github.com/tigattack/scanservjs",
      "org.opencontainers.image.title": "scanservjs",
      "org.opencontainers.image.url": "https://github.com/tigattack/scanservjs",
      "org.opencontainers.image.version": "v3.0.4"
    },
    "annotations": [
      "manifest:org.opencontainers.image.created=2025-03-12T16:16:21.098Z",
      "manifest:org.opencontainers.image.description=SANE scanner nodejs web ui",
      "manifest:org.opencontainers.image.licenses=GPL-2.0",
      "manifest:org.opencontainers.image.revision=8d0588f6c5886ed3783853d06ece36b834c3d61f",
      "manifest:org.opencontainers.image.source=https://github.com/tigattack/scanservjs",
      "manifest:org.opencontainers.image.title=scanservjs",
      "manifest:org.opencontainers.image.url=https://github.com/tigattack/scanservjs",
      "manifest:org.opencontainers.image.version=v3.0.4"
    ]
  }

  The event mock data looked like this:

  {
    "action": "created",
    "release": {
      "tag_name": "v3.0.4"
    }
  }

• workflow_dispatch:

  {
    "tags": [],
    "labels": {
      "org.opencontainers.image.created": "2025-03-12T16:24:36.661Z",
      "org.opencontainers.image.description": "SANE scanner nodejs web ui",
      "org.opencontainers.image.licenses": "GPL-2.0",
      "org.opencontainers.image.revision": "8d0588f6c5886ed3783853d06ece36b834c3d61f",
      "org.opencontainers.image.source": "https://github.com/tigattack/scanservjs",
      "org.opencontainers.image.title": "scanservjs",
      "org.opencontainers.image.url": "https://github.com/tigattack/scanservjs",
      "org.opencontainers.image.version": ""
    },
    "annotations": [
      "manifest:org.opencontainers.image.created=2025-03-12T16:24:36.661Z",
      "manifest:org.opencontainers.image.description=SANE scanner nodejs web ui",
      "manifest:org.opencontainers.image.licenses=GPL-2.0",
      "manifest:org.opencontainers.image.revision=8d0588f6c5886ed3783853d06ece36b834c3d61f",
      "manifest:org.opencontainers.image.source=https://github.com/tigattack/scanservjs",
      "manifest:org.opencontainers.image.title=scanservjs",
      "manifest:org.opencontainers.image.url=https://github.com/tigattack/scanservjs",
      "manifest:org.opencontainers.image.version="
    ]
  }