ci: new tag format on pr

.gitea/workflows/build.yaml

@@ -8,7 +8,6 @@ on:
 
 # Variables: https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/store-information-in-variables#default-environment-variables + https://forgejo.org/docs/latest/user/actions/#env-1
 
-
 jobs:
   lint:
     steps:
@@ -57,6 +56,10 @@ jobs:
         with:
           images: |
             registry.mgrote.net/${{ steps.name.outputs.REPO_NAME }}
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=ref,event=branch
+            type=ref,event=pr
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 #      - name: Login to Docker Hub