explicit docker install?

.gitea/workflows/build.yaml

@@ -25,13 +25,8 @@ jobs:
         username: ${{ secrets.docker_username }}
         password: ${{ secrets.docker_password }}
 
-    - name: Install Docker
-      run: |
-        curl -fsSL https://get.docker.com -o get-docker.sh
-        sh get-docker.sh
-        sudo usermod -aG docker $USER
-        sudo systemctl start docker
-        sudo systemctl enable docker
+    - name: Set up Docker Buildx
+      uses: https://github.com/docker/setup-buildx-action@v3
 
     - name: Build
       uses: https://github.com/docker/build-push-action@v2