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>

Dockerfile.builder

@@ -0,0 +1,22 @@
+FROM ubuntu:22.04
+
+# Avoid interactive prompts
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install build dependencies and tools
+RUN apt-get update && apt-get install -y \
+    # Build essentials
+    curl \
+    wget \
+    git \
+    jq \
+    ca-certificates \
+    # Docker
+    docker.io \
+    # Utilities
+    bash \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set working directory
+WORKDIR /workspace