feat(ci/cd): Automatically build image, archive upstream workflows

.gitea/workflows/build.yml

@@ -0,0 +1,48 @@
+name: Build
+
+on:
+  schedule:
+    - cron: "0 0 * * 1"
+
+jobs:
+  build:
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Extract Version Tag
+        id: extract-version
+        run: |
+          git clone https://github.com/ONLYOFFICE/DocumentServer
+          cd DocumentServer
+          echo "docker_tag=$(git describe --tags --abbrev=0 | cut -d 'v' -f2-") >> GITHUB_OUTPUT
+          cd .. && rm -rf DocumentServer
+        shell: bash
+      
+      - name: Install Docker
+        run: |
+          apt-get update
+          apt-get install docker.io -y          
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          # driver-opts: network=host
+          platforms: linux/amd64,linux/arm64
+
+      - name: Build and push image
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: jiriks74/onlyoffice-documentserver:${{ steps.extract-version.outputs.docker_tag }},jiriks74/onlyoffice-documentserver:latest
+          platforms: linux/amd64,linux/arm64
+          context: .
+          file: ./Dockerfile