fix: use docker build instead of docker-compose in CI

.gitea/workflows/ci.yml

@@ -61,14 +61,5 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Install Docker CLI
-        run: |
-          curl -fsSL https://download.docker.com/linux/static/stable/x86_64/docker-24.0.7.tgz -o /tmp/docker.tgz
-          tar -xzf /tmp/docker.tgz -C /tmp
-          cp /tmp/docker/docker /usr/local/bin/
-          chmod +x /usr/local/bin/docker
-          curl -fsSL "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
-          chmod +x /usr/local/bin/docker-compose
-
       - name: Build Docker images
-        run: docker-compose build
+        run: docker build