Initial commit: Nicotine-Less Docker container

Lightweight Docker container for Nicotine+ with noVNC web interface and Firefox ESR browser.

Features:
- noVNC web interface with dynamic resize support
- Firefox ESR for testing ports and browsing
- TigerVNC with AcceptSetDesktopSize enabled
- Supervisor for process management
- Configurable user/group permissions

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.gitea/workflows/build.yml

@@ -0,0 +1,36 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.nicola.sh
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: |
+            git.nicola.sh/public/nicotine-less:latest
+            git.nicola.sh/public/nicotine-less:${{ github.sha }}
+          cache-from: type=registry,ref=git.nicola.sh/public/nicotine-less:buildcache
+          cache-to: type=registry,ref=git.nicola.sh/public/nicotine-less:buildcache,mode=max