Add docker file and an action

.gitea/workflows/release.yaml

@@ -0,0 +1,47 @@
+name: Build release image
+
+on:
+  push:
+    tags:
+      - "*.*.*"
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    container:
+      image: git.nicelycomposed.codes/koshyk-io/flutter-gitea-action-image-builder:latest
+      credentials:
+        username: ${{ secrets.IMAGE_REGISTRY_USER }}
+        password: ${{ secrets.IMAGE_REGISTRY_PASSWORD }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+      - name: Set up NodeJS
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+      - name: Get dependencies
+        working-directory: ${{ gitea.workspace }}
+        run: |
+          npm install --global yarn
+          yarn
+      - name: Build website
+        working-directory: ${{ gitea.workspace }}
+        run: |
+          yarn build
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to Registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.nicelycomposed.codes
+          username: ${{ secrets.IMAGE_REGISTRY_USER }}
+          password: ${{ secrets.IMAGE_REGISTRY_PASSWORD }}
+      - name: Build docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: |
+            git.nicelycomposed.codes/yehor/www-yevi-org:${{ gitea.ref_name }}
+            git.nicelycomposed.codes/yehor/www-yevi-org:latest