ci: add ubuntu

.gitea/workflows/ubuntu.yaml

@@ -0,0 +1,39 @@
+name: Build Ubuntu
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: ubuntu:latest
+            dockerfile: ubuntu/Dockerfile
+            tag: ubuntu:latest
+          - name: ubuntu:26.04
+            dockerfile: ubuntu/Dockerfile
+            tag: ubuntu:26.04
+
+    name: Build ${{ matrix.name }}
+
+    steps:
+      - name: Checkout
+        uses: https://gitea.starryskymeow.cn/mirrors/checkout@v6
+
+      - name: Log in to Docker Hub
+        uses: https://gitea.starryskymeow.cn/mirrors/docker-login-action@v4
+        with:
+          username: ${{ vars.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build and push
+        run: |
+          docker build --push \
+            --platform=linux/amd64,linux/arm64 \
+            -f ${{ matrix.dockerfile }} \
+            -t ${{ vars.DOCKER_USERNAME }}/${{ matrix.tag }} \
+            .