💚 docker build and push on release

when a github release is published a docker image is pushed to ghcr avoiding manual workflow dispatch method (but still making it available as a fallback)

.github/workflows/ghcr_deploy.yml

@@ -1,10 +1,12 @@
 #
-name: Build & Publich to GHCR
+name: Build & Publish to GHCR
 on:
   workflow_dispatch:
     inputs:
       tag:
         description: "The tag version you want to build"
+  release:
+    types: [published]
 
 # Defines two custom environment variables for the workflow. Used for the Container registry domain, and a name for the Docker image that this workflow builds.
 env:
@@ -44,5 +46,5 @@ jobs:
         with:
           context: .
           push: true
-          tags: ${{ steps.meta.outputs.tags }}-${{ github.event.inputs.tag }}  # Add the input tag to the image tags
+          tags: ${{ steps.meta.outputs.tags }}-${{ github.event.inputs.tag || github.event.release.tag_name }} # if a tag is provided, use that, otherwise use the release tag
           labels: ${{ steps.meta.outputs.labels }}