fix(docker): run docker.yml on release published

This is what I wanted to do first, let's see what docker-metadata says.

.github/workflows/docker.yml

@@ -3,16 +3,15 @@ name: Docker
 on:
   pull_request:
 
-  push:
-    tags:
-      - 'v[0-9]+.[0-9]+.[0-9]+.[0-9]+' # PVP version
+  release:
+    types: [published]
 
 jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
       # Only log in if we're going to push
-      - if: ${{ github.event_name == 'push' }}
+      - if: ${{ github.event_name == 'release' }}
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
@@ -30,7 +29,7 @@ jobs:
           cache-to: type=gha,mode=max
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          push: ${{ github.event_name == 'push' }}
+          push: ${{ github.event_name == 'release' }}
 
   hadolint:
     runs-on: ubuntu-latest