fix: deploy.sh reads MySQL config from .env instead of generating it

- Error out if .env is missing, instruct user to copy from .env.example
- Source .env to load MYSQL_* variables for docker compose
- Command-line port argument overrides PORT in .env

deploy.sh

@@ -78,36 +78,68 @@ setup_go_proxy() {
 }
 
 # ----------------------------------------------------------
-# 4. 配置服务端口
+# 4. 读取 .env 配置文件
 # ----------------------------------------------------------
-setup_port() {
+load_env() {
     local port="${1:-9050}"
-    local compose_file="docker-compose.yml"
 
-    info "配置服务端口为 ${port}..."
-    sed -i "s/- \"8080:8080\"/- \"${port}:8080\"/" "$compose_file"
-    info "端口配置完成: ${port}"
+    if [ ! -f ".env" ]; then
+        error ".env 文件不存在，请先执行: cp .env.example .env 并填写 MySQL 连接信息"
+    fi
+
+    info "读取 .env 配置..."
+    set -a
+    # shellcheck disable=SC1091
+    source .env
+    set +a
+
+    # 命令行参数覆盖 .env 中的 PORT
+    if [ -n "$port" ]; then
+        export PORT="$port"
+    fi
+
+    info "MySQL: ${MYSQL_USER}@${MYSQL_HOST}:${MYSQL_PORT}/${MYSQL_DATABASE}"
 }
 
 # ----------------------------------------------------------
 # 5. 构建并启动服务
 # ----------------------------------------------------------
 build_and_start() {
+    local port="${1:-9050}"
+
     info "构建 Docker 镜像（首次可能需要几分钟）..."
     docker compose build
 
     info "启动服务..."
     docker compose up -d
 
-    info "等待服务启动..."
+    info "等待 MySQL 就绪..."
+    local retries=30
+    while [ $retries -gt 0 ]; do
+        if docker compose exec -T mysql mysqladmin ping -h localhost --silent 2>/dev/null; then
+            info "MySQL 就绪"
+            break
+        fi
+        retries=$((retries - 1))
+        sleep 2
+    done
+
+    if [ $retries -eq 0 ]; then
+        warn "MySQL 启动超时，继续等待应用自行重连..."
+        sleep 10
+    fi
+
+    info "等待应用启动..."
     sleep 3
 
     if docker compose ps | grep -q "running\|Up"; then
         info "=========================================="
         info "  PR-Helper 部署成功！"
         info "=========================================="
-        info "访问地址: http://$(hostname -I | awk '{print $1}'):${PORT:-9050}"
-        info "本地访问: http://localhost:${PORT:-9050}"
+        info "访问地址: http://$(hostname -I | awk '{print $1}'):${port}"
+        info "本地访问: http://localhost:${port}"
+        info ""
+        info "数据库配置: .env"
         info ""
         info "常用命令:"
         info "  查看日志:  docker compose logs -f"
@@ -124,7 +156,6 @@ build_and_start() {
 # ----------------------------------------------------------
 main() {
     local port="${1:-9050}"
-    export PORT="$port"
 
     info "开始部署 PR-Helper..."
     info "目标端口: ${port}"
@@ -132,8 +163,8 @@ main() {
     check_docker
     setup_docker_mirror
     setup_go_proxy
-    setup_port "$port"
-    build_and_start
+    load_env "$port"
+    build_and_start "$port"
 }
 
 main "$@"