test: use kaniko to build image

.gitea/workflows/build-and-push.yaml

@@ -8,20 +8,20 @@ jobs:
   build:
     name: Build image
     runs-on: ubuntu-latest
-
     steps:
-    - name: Install Docker
-      run: curl -fsSL https://get.docker.com | sh
-
     - uses: actions/checkout@v3
-
-    # https://github.com/marketplace/actions/push-to-ghcr
-    - name: Build and publish a Docker image for ${{ gitea.repository }}
-      uses: macbre/push-to-ghcr@v13
+    - uses: docker/metadata-action@v3
+      id: metadata
       with:
-        image_name: ${{ gitea.repository }}  # it will be lowercased internally
-        github_token: ${{ secrets.GH_TOKEN }}
-        # optionally push to the Docker Hub (docker.io)
-        docker_io_token: ${{ secrets.DOCKER_IO_ACCESS_TOKEN }}  # see https://hub.docker.com/settings/security
-        # customize the username to be used when pushing to the Docker Hub
-        docker_io_user: tandrade  # see https://github.com/macbre/push-to-ghcr/issues/14
+        images: git.thebarrens.nu/${{ gitea.repository}}
+    - uses: docker/login-action@v2
+      with:
+        registry: git.thebarrens.nu
+        username: ${{ gitea.actor }}
+        password: ${{ secrets.GITEA_TOKEN }}
+    - uses: int1128/kaniko-action@v1
+      with:
+        push: true
+        tags: latest
+        labels: ${{ steps.metadata.outputs.labels }}
+        cache: false