Initial commit: Maskarr - Tracker proxy for *arr apps

- HTTP proxy server to modify User-Agent and headers for private trackers
  - Web UI with collapsible tracker cards and real-time validation
  - Multi-tracker support with persistent JSON configuration
  - Thread-safe configuration management
  - Full HTTP methods support (GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS)
  - REST API for tracker management
  - Docker support with multi-architecture builds (amd64, arm64, arm/v7)
  - CI/CD workflows for GitHub Actions and Gitea Actions
  - Automatic publishing to GitHub Container Registry and Gitea Registry

.gitea/workflows/docker-publish.yml

@@ -0,0 +1,84 @@
+name: Build and Publish Docker Images
+
+on:
+  push:
+    branches:
+      - main
+      - master
+    tags:
+      - 'v*.*.*'
+  pull_request:
+    branches:
+      - main
+      - master
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Set image name
+        id: image
+        run: |
+          # Normalize repository name to lowercase
+          REPO_LOWER=$(echo "${{ gitea.repository }}" | tr '[:upper:]' '[:lower:]')
+          GITEA_REGISTRY="${{ gitea.server_url }}"
+
+          # Remove https:// from server URL for registry
+          GITEA_HOST=$(echo "$GITEA_REGISTRY" | sed 's|https://||' | sed 's|http://||')
+
+          echo "gitea_host=${GITEA_HOST}" >> $GITHUB_OUTPUT
+          echo "gitea_image=${GITEA_HOST}/${REPO_LOWER}" >> $GITHUB_OUTPUT
+
+      - name: Log in to Gitea Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ steps.image.outputs.gitea_host }}
+          username: ${{ gitea.actor }}
+          password: ${{ secrets.AUTH_TOKEN }}
+
+      - name: Generate tags
+        id: tags
+        run: |
+          GITEA_IMG="${{ steps.image.outputs.gitea_image }}"
+
+          if [[ "${{ github.ref }}" == refs/tags/v* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/v}
+            TAGS="${GITEA_IMG}:${VERSION},${GITEA_IMG}:latest"
+          else
+            TAGS="${GITEA_IMG}:latest"
+          fi
+
+          echo "tags=${TAGS}" >> $GITHUB_OUTPUT
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64,linux/arm/v7
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.tags.outputs.tags }}
+          labels: |
+            org.opencontainers.image.title=Maskarr
+            org.opencontainers.image.description=Tracker Proxy for *arr Applications
+            org.opencontainers.image.source=${{ gitea.server_url }}/${{ gitea.repository }}
+            org.opencontainers.image.revision=${{ gitea.sha }}
+            org.opencontainers.image.created=${{ gitea.event.repository.updated_at }}
+
+      - name: Print summary
+        if: github.event_name != 'pull_request'
+        run: |
+          echo "✅ Docker image published successfully!"
+          echo ""
+          echo "Gitea Registry:"
+          echo "  ${{ steps.image.outputs.gitea_image }}:latest"