FROM nginx:alpine
COPY default.conf /etc/nginx/conf.d/default.conf
COPY ssl /etc/nginx/ssl

# 启动时自动获取宿主机内网 IP，替换 __API_HOST__ 占位符（与 admin-ui 同方案，可用 API_HOST 环境变量覆盖）
RUN printf '%s\n' \
    '#!/bin/sh' \
    'set -e' \
    'if [ -n "$API_HOST" ]; then' \
    '    HOST_IP="$API_HOST"' \
    'else' \
    '    HOST_IP=$(route -n 2>/dev/null | grep "^0.0.0.0" | tr -s " " | cut -d " " -f2)' \
    'fi' \
    'sed -i "s/__API_HOST__/$HOST_IP/g" /etc/nginx/conf.d/default.conf' \
    > /docker-entrypoint.d/01-set-api-host.sh && chmod +x /docker-entrypoint.d/01-set-api-host.sh