Release AimiliVPN V2.1 stable channel

Dockerfile

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+FROM debian:bookworm-slim
+
+ARG TARGETARCH
+ARG TARGETVARIANT
+ARG BUILD_VERSION=dev
+
+LABEL org.opencontainers.image.title="AimiliVPN" \
+      org.opencontainers.image.description="VPNGate node manager with HTTP and SOCKS5 proxy" \
+      org.opencontainers.image.source="https://github.com/baoweise-bot/aimili-vpngate" \
+      org.opencontainers.image.version="${BUILD_VERSION}"
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        ca-certificates \
+        iproute2 \
+        iptables \
+        openvpn \
+        procps \
+        psmisc \
+        python3 \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+COPY VERSION README.md LICENSE ./
+COPY vpngate_manager.py vpn_utils.py proxy_server.py snapshot_utils.py ./
+COPY mirror ./mirror
+
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    VPNGATE_DATA_DIR=/data \
+    UI_HOST=0.0.0.0 \
+    UI_PORT=8787 \
+    LOCAL_PROXY_HOST=127.0.0.1 \
+    LOCAL_PROXY_PORT=7928
+
+RUN mkdir -p /data \
+    && python3 -m py_compile vpngate_manager.py vpn_utils.py proxy_server.py snapshot_utils.py
+
+VOLUME ["/data"]
+EXPOSE 8787/tcp 7928/tcp
+STOPSIGNAL SIGTERM
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=30s --retries=3 \
+    CMD python3 -c "import os,socket; s=socket.create_connection(('127.0.0.1',int(os.environ.get('UI_PORT','8787'))),3); s.close()"
+
+CMD ["python3", "vpngate_manager.py"]