fix: add buildx setup, match tag/latest behavior, add PR trigger

.gitea/actions/docker-build/action.yml

@@ -32,6 +32,9 @@ inputs:
 runs:
   using: composite
   steps:
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
     - name: Log in to registry
       if: inputs.publish == 'true'
       uses: docker/login-action@v3
@@ -57,9 +60,9 @@ runs:
         images: ${{ steps.name.outputs.value }}
         tags: |
           type=ref,event=branch
-          type=semver,pattern={{version}}
-          type=semver,pattern=v{{major}}.{{minor}}
+          type=ref,event=tag
           type=sha,prefix=sha-,format=short
+          type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/') }}
 
     - name: Build and push
       uses: docker/build-push-action@v6

.gitea/workflows/build-template.yml

@@ -9,12 +9,15 @@ on:
   push:
     branches: [main]
     tags: ["v*"]
+  pull_request:
+    branches: [main]
 
 jobs:
   build:
     runs-on: ubuntu-latest
     container:
       image: git.librete.ch/libretech/runner-image:v1
+    timeout-minutes: 20
     steps:
       - uses: actions/checkout@v4
 
@@ -23,4 +26,4 @@ jobs:
           registry: ${{ secrets.REGISTRY }}
           registry_user: ${{ secrets.REGISTRY_USER }}
           registry_pass: ${{ secrets.REGISTRY_PASS }}
-          publish: ${{ secrets.PUBLISH_ENABLED }}
+          publish: ${{ github.event_name == 'push' && vars.PUBLISH_ENABLED == 'true' }}