diff --git a/docker/Dockerfile b/docker/Dockerfile
index 202ffca8..f7935543 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -30,6 +30,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     git \
     busybox \
     tini \
+    cron \
     jq \
     ripgrep \
     less \
diff --git a/docker/cert.sh b/docker/cert.sh
index 39a7c4ab..253174da 100644
--- a/docker/cert.sh
+++ b/docker/cert.sh
@@ -1,5 +1,14 @@
 #!/bin/bash
+CERT_ERREXIT_WAS_SET=false
+CERT_PIPEFAIL_WAS_SET=false
+if [[ "$-" == *e* ]]; then
+    CERT_ERREXIT_WAS_SET=true
+fi
+if shopt -qo pipefail; then
+    CERT_PIPEFAIL_WAS_SET=true
+fi
 set -e
+set -o pipefail
 
 Green="\033[32m"
 Red="\033[31m"
@@ -18,110 +27,206 @@ function WARN() {
     echo -e "${WARN} ${1}"
 }
 
+CERT_DIR="${CONFIG_DIR}/certs"
+ACME_HOME="${CONFIG_DIR}/acme.sh"
+ACME_DATA_DIR="${ACME_HOME}/data"
+ACME_CERT_DIR="${CERT_DIR}/${SSL_DOMAIN}"
+ACME_LATEST_CERT_DIR="${CERT_DIR}/latest"
+NGINX_RELOAD_CMD="nginx -s reload 2>/dev/null || true"
+
+# 恢复调用方原有 shell 选项，避免 source 本脚本后影响 entrypoint 后续流程。
+function restore_shell_options() {
+    if ! ${CERT_PIPEFAIL_WAS_SET}; then
+        set +o pipefail
+    fi
+    if ! ${CERT_ERREXIT_WAS_SET}; then
+        set +e
+    fi
+}
+
+# 输出错误并恢复调用方 shell 选项，确保 source 失败时不会污染后续流程。
+function exit_with_error() {
+    ERROR "$1"
+    restore_shell_options
+    exit 1
+}
+
+# 使用固定的 acme.sh 工作目录执行命令，避免签发、安装和续期读取不同配置目录。
+function run_acme() {
+    LE_WORKING_DIR="${ACME_HOME}" \
+        LE_CONFIG_HOME="${ACME_DATA_DIR}" \
+        LE_CERT_HOME="${CERT_DIR}" \
+        "${ACME_HOME}/acme.sh" --home "${ACME_HOME}" "$@"
+}
+
+# 维护 nginx 使用的稳定证书目录链接，兼容手动证书和自动签发证书路径。
+function link_latest_cert_dir() {
+    if [ -e "${ACME_LATEST_CERT_DIR}" ] && [ ! -L "${ACME_LATEST_CERT_DIR}" ]; then
+        rm -rf "${ACME_LATEST_CERT_DIR}"
+    fi
+    ln -sfn "${ACME_CERT_DIR}" "${ACME_LATEST_CERT_DIR}"
+}
+
+# 配置证书自动续期；续期任务失败不应阻断已有证书启动。
+function configure_cert_renewal() {
+    if ! command -v cron >/dev/null 2>&1; then
+        WARN "未安装 cron，跳过证书自动续期任务配置"
+        return 0
+    fi
+
+    if ! mkdir -p /etc/cron.d 2>/dev/null; then
+        WARN "无法创建 /etc/cron.d，跳过证书自动续期任务配置"
+        return 0
+    fi
+
+    if ! printf "0 3 * * * root LE_WORKING_DIR=%q LE_CONFIG_HOME=%q LE_CERT_HOME=%q %q --cron --home %q\n" \
+        "${ACME_HOME}" \
+        "${ACME_DATA_DIR}" \
+        "${CERT_DIR}" \
+        "${ACME_HOME}/acme.sh" \
+        "${ACME_HOME}" > /etc/cron.d/acme 2>/dev/null; then
+        WARN "无法写入 /etc/cron.d/acme，跳过证书自动续期任务配置"
+        return 0
+    fi
+
+    if ! chmod 644 /etc/cron.d/acme 2>/dev/null; then
+        WARN "无法设置 /etc/cron.d/acme 权限，证书自动续期任务可能不会生效"
+        return 0
+    fi
+
+    if ! pgrep -x cron >/dev/null 2>&1 && ! cron 2>/dev/null; then
+        WARN "cron 启动失败，证书自动续期任务可能不会生效"
+    fi
+}
+
 # 核心条件验证
 if [ "${ENABLE_SSL}" = "true" ] && \
    [ "${AUTO_ISSUE_CERT}" = "true" ] && \
    [ -n "${SSL_DOMAIN}" ]; then
 
     # 创建证书目录
-    mkdir -p /config/certs/"${SSL_DOMAIN}"
-    chown moviepilot:moviepilot /config/certs -R
+    mkdir -p "${ACME_CERT_DIR}"
+    if id moviepilot >/dev/null 2>&1; then
+        chown moviepilot:moviepilot "${CERT_DIR}" -R
+    fi
 
     # 安装acme.sh（使用官方安装脚本）
-    if [ ! -d "/config/acme.sh" ]; then
+    if [ ! -f "${ACME_HOME}/acme.sh" ]; then
         INFO "→ 安装acme.sh..."
 
-        # 设置安装环境变量
-        export LE_WORKING_DIR="/config/acme.sh"
-        export LE_CONFIG_HOME="/config/acme.sh/data"
-        export LE_CERT_HOME="/config/certs"
-
         # 执行官方安装命令（添加错误处理）
         INFO "正在下载并安装 acme.sh..."
         
-        # 构建安装命令
-        INSTALL_CMD="curl -sSL https://get.acme.sh | sh -s -- --install-online"
+        install_args=("--install-online")
         if [ -n "${SSL_EMAIL}" ]; then
-            INSTALL_CMD="${INSTALL_CMD} --accountemail ${SSL_EMAIL}"
+            install_args+=("--accountemail" "${SSL_EMAIL}")
         else
             WARN "未设置SSL_EMAIL，建议配置邮箱用于证书过期提醒"
         fi
         
-        if ! eval "${INSTALL_CMD}"; then
-            ERROR "acme.sh 安装失败"
-            exit 1
+        if ! curl -sSL https://get.acme.sh | \
+            LE_WORKING_DIR="${ACME_HOME}" \
+            LE_CONFIG_HOME="${ACME_DATA_DIR}" \
+            LE_CERT_HOME="${CERT_DIR}" \
+            sh -s -- "${install_args[@]}"; then
+            exit_with_error "acme.sh 安装失败"
         fi
 
         # 验证安装是否成功
-        if [ ! -f "/config/acme.sh/acme.sh" ]; then
-            ERROR "acme.sh 安装后文件不存在，安装可能失败"
-            exit 1
+        if [ ! -f "${ACME_HOME}/acme.sh" ]; then
+            exit_with_error "acme.sh 安装后文件不存在，安装可能失败"
         fi
 
         INFO "acme.sh 安装成功"
     fi
 
     # 签发证书（仅当证书不存在时）
-    if [ ! -f "/config/certs/${SSL_DOMAIN}/fullchain.pem" ]; then
+    if [ ! -f "${ACME_CERT_DIR}/fullchain.pem" ] || [ ! -f "${ACME_CERT_DIR}/privkey.pem" ]; then
         # 必要参数检查
         REQUIRED_VARS=("DNS_PROVIDER")
         for var in "${REQUIRED_VARS[@]}"; do
             eval "value=\${${var}}"
-            [ -z "$value" ] && { ERROR "必须设置环境变量: ${var}"; exit 1; }
+            [ -z "$value" ] && exit_with_error "必须设置环境变量: ${var}"
         done
 
         INFO "→ 签发证书: ${SSL_DOMAIN} (DNS验证方式: ${DNS_PROVIDER})"
 
         # 加载ACME环境变量（带安全过滤）
-        INFO "正在加载ACME环境变量..."
-        env | grep '^ACME_ENV_' | while read -r line; do
-            key="${line#ACME_ENV_}"
-            key="${key%%=*}"
-            value="${line#ACME_ENV_${key}=}"
+        acme_exported_vars=()
+        acme_original_keys=()
+        acme_original_values=()
+        acme_had_original_values=()
+        while IFS= read -r var_name; do
+            [ -z "${var_name}" ] && continue
+            key="${var_name#ACME_ENV_}"
+            value="${!var_name}"
 
             # 过滤非法变量名
             if [[ "$key" =~ ^[a-zA-Z_][a-zA-Z0-9_]*$ ]]; then
+                acme_original_keys+=("${key}")
+                if eval "[ -n \"\${${key}+x}\" ]"; then
+                    acme_had_original_values+=("true")
+                    acme_original_values+=("$(eval "printf '%s' \"\${${key}}\"")")
+                else
+                    acme_had_original_values+=("false")
+                    acme_original_values+=("")
+                fi
                 export "$key"="$value"
-                INFO "已加载环境变量: ${key}=******"
+                acme_exported_vars+=("${key}")
             else
                 WARN "跳过无效变量名: ${key}"
             fi
-        done
+        done < <(compgen -A variable ACME_ENV_ || true)
 
         # 签发证书（添加错误处理）
         INFO "正在签发证书..."
-        if ! /config/acme.sh/acme.sh --issue \
+        if ! run_acme --issue \
             --dns "${DNS_PROVIDER}" \
             --domain "${SSL_DOMAIN}" \
-            --key-file /config/certs/"${SSL_DOMAIN}"/privkey.pem \
-            --fullchain-file /config/certs/"${SSL_DOMAIN}"/fullchain.pem \
-            --reloadcmd "nginx -s reload" \
             --force; then
-            ERROR "证书签发失败"
-            exit 1
+            exit_with_error "证书签发失败"
         fi
 
+        INFO "正在安装证书文件..."
+        if ! run_acme --install-cert \
+            --domain "${SSL_DOMAIN}" \
+            --key-file "${ACME_CERT_DIR}/privkey.pem" \
+            --fullchain-file "${ACME_CERT_DIR}/fullchain.pem" \
+            --reloadcmd "${NGINX_RELOAD_CMD}"; then
+            exit_with_error "证书安装失败"
+        fi
+
+        for index in "${!acme_original_keys[@]}"; do
+            var_name="${acme_original_keys[$index]}"
+            if [ "${acme_had_original_values[$index]}" = "true" ]; then
+                export "${var_name}=${acme_original_values[$index]}"
+            else
+                unset "${var_name}"
+            fi
+        done
+
         # 创建稳定符号链接
-        ln -sf /config/certs/"${SSL_DOMAIN}" /config/certs/latest
+        link_latest_cert_dir
         INFO "证书签发成功"
     else
+        link_latest_cert_dir
         INFO "证书已存在，跳过签发步骤"
     fi
 
     # 配置自动更新任务
     INFO "→ 配置cron自动更新..."
-    echo "0 3 * * * /config/acme.sh/acme.sh --cron --home /config/acme.sh && nginx -s reload" > /etc/cron.d/acme
-    chmod 644 /etc/cron.d/acme
-    service cron start
+    configure_cert_renewal
 
 elif [ "${ENABLE_SSL}" = "true" ] && [ "${AUTO_ISSUE_CERT}" = "true" ] && [ -z "${SSL_DOMAIN}" ]; then
-    WARN "已启用自动签发证书但未设置SSL_DOMAIN，跳过证书管理"
+    exit_with_error "已启用自动签发证书但未设置 SSL_DOMAIN，无法生成 HTTPS 证书"
 elif [ "${ENABLE_SSL}" = "true" ] && [ "${AUTO_ISSUE_CERT}" = "false" ]; then
     INFO "SSL已启用但自动签发证书已禁用，将使用手动配置的证书"
     # 检查证书文件是否存在
-    if [ -f "/config/certs/latest/fullchain.pem" ] && [ -f "/config/certs/latest/privkey.pem" ]; then
+    if [ -f "${ACME_LATEST_CERT_DIR}/fullchain.pem" ] && [ -f "${ACME_LATEST_CERT_DIR}/privkey.pem" ]; then
         INFO "检测到证书文件，SSL配置正常"
     else
-        WARN "未检测到证书文件，请确保手动配置了正确的证书路径"
+        exit_with_error "未检测到证书文件，请将 fullchain.pem 和 privkey.pem 放入 ${ACME_LATEST_CERT_DIR}"
     fi
-fi
\ No newline at end of file
+fi
+
+restore_shell_options
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index 0822a5a5..7ee406dd 100644
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -27,9 +27,6 @@ export PATH="${VENV_PATH}/bin:$PATH"
 # 校正设置目录
 CONFIG_DIR="${CONFIG_DIR:-/config}"
 
-# 记录非系统环境（docker容器表）提供的变量
-declare -ga VARS_SET_BY_SCRIPT=()
-
 # 环境变量补全
 # 优先级: 系统环境变量 -> .env 文件 (即使为空字符串) -> 预设默认值
 # 精准适配 Python 端 set_key (quote_mode="always", 单引号包裹, \' 转义)
@@ -38,7 +35,7 @@ function load_config_from_app_env() {
     local env_file="${CONFIG_DIR}/app.env"
 
     # 定义 ["变量名"]="预设默认值"
-    # 禁止填入 CONFIG_DIR 变量，ACME_ENV_ 开头的变量暂时不处理，还是交由 cert.sh 处理
+    # 禁止填入 CONFIG_DIR 变量，ACME_ENV_ 开头的变量不设默认值，仅透传 app.env 中已有配置。
     declare -A vars_and_default_values=(
         # update.sh
         ["PIP_PROXY"]=""
@@ -48,19 +45,13 @@ function load_config_from_app_env() {
         ["MOVIEPILOT_AUTO_UPDATE"]="release"
         ["BROWSER_EMULATION"]="cloakbrowser"
 
-        # database
-        ["DB_TYPE"]="sqlite"
-        ["DB_POSTGRESQL_HOST"]="localhost"
-        ["DB_POSTGRESQL_PORT"]="5432"
-        ["DB_POSTGRESQL_DATABASE"]="moviepilot"
-        ["DB_POSTGRESQL_USERNAME"]="moviepilot"
-        ["DB_POSTGRESQL_PASSWORD"]="moviepilot"
-        ["DB_POSTGRESQL_POOL_SIZE"]="20"
-        ["DB_POSTGRESQL_MAX_OVERFLOW"]="30"
-
         # cert
         ["ENABLE_SSL"]="false"
+        ["AUTO_ISSUE_CERT"]="false"
         ["SSL_DOMAIN"]=""
+        ["SSL_EMAIL"]=""
+        ["DNS_PROVIDER"]=""
+        ["SSL_NGINX_PORT"]="443"
         ["NGINX_PORT"]="3000"
         ["PORT"]="3001"
         ["NGINX_CLIENT_MAX_BODY_SIZE"]="50m"
@@ -83,7 +74,7 @@ function load_config_from_app_env() {
                 key_in_file="${BASH_REMATCH[1]}"
                 value_raw_in_file="${BASH_REMATCH[2]}"
 
-                if [[ -n "${vars_and_default_values[$key_in_file]+_}" ]]; then
+                if [[ -n "${vars_and_default_values[$key_in_file]+_}" || "${key_in_file}" == ACME_ENV_* ]]; then
                     local temp_val_after_initial_trim
                     temp_val_after_initial_trim="${value_raw_in_file#"${value_raw_in_file%%[![:space:]]*}"}"
                     temp_val_after_initial_trim="${temp_val_after_initial_trim%"${temp_val_after_initial_trim##*[![:space:]]}"}"
@@ -120,20 +111,16 @@ function load_config_from_app_env() {
         INFO "${env_file} 文件不存在，跳过文件加载。"
      fi
 
-    INFO "正在根据优先级确定并导出配置值..."
     for var_name in "${!vars_and_default_values[@]}"; do
         local fallback_value="${vars_and_default_values[$var_name]}"
         local final_value
         local value_source="未设置"
-        # 标志变量是否来自初始环境
-        local set_by_initial_env=false
 
         # 检查变量是否在环境中已设置（可能为空）
         if eval "[ -n \"\${${var_name}+x}\" ]"; then
             # 获取其值
             final_value="$(eval echo \"\$"${var_name}"\")"
             value_source="系统环境变量"
-            set_by_initial_env=true
         elif [[ -n "${values_from_env_file["${var_name}"]+_}" ]]; then
             final_value="${values_from_env_file["${var_name}"]}"
             value_source=".env 文件"
@@ -142,31 +129,20 @@ function load_config_from_app_env() {
             value_source="内置默认值"
         fi
 
-        # 不论来源如何，都导出变量，以便脚本的其余部分和子进程使用
-        # (例如 envsubst, mp_update.sh, cert.sh)
-        if declare -gx "${var_name}=${final_value}"; then
-            if [ -z "${final_value}" ]; then
-                 INFO "变量 ${var_name}, 值为空 (来源: ${value_source})。"
-            else
-                 INFO "变量 ${var_name}, 值: ${final_value} (来源: ${value_source})。"
-            fi
+        if ! declare -g "${var_name}=${final_value}"; then
+            ERROR "设置变量 ${var_name}, 值: '${final_value}'失败 (来源: ${value_source}) "
+        fi
+    done
 
-            # 如果变量不是来自初始环境变量，则记录下来以便稍后 unset
-            if ! ${set_by_initial_env}; then
-                # 检查是否已在数组中，避免重复添加
-                local found_in_script_vars=false
-                for item in "${VARS_SET_BY_SCRIPT[@]}"; do
-                    if [[ "$item" == "$var_name" ]]; then
-                        found_in_script_vars=true
-                        break
-                    fi
-                done
-                if ! ${found_in_script_vars}; then
-                    VARS_SET_BY_SCRIPT+=("${var_name}")
-                fi
-            fi
-        else
-            ERROR "导出变量 ${var_name}, 值: '${final_value}'失败 (来源: ${value_source}) "
+    for var_name in "${!values_from_env_file[@]}"; do
+        if [[ "${var_name}" != ACME_ENV_* ]]; then
+            continue
+        fi
+        if eval "[ -n \"\${${var_name}+x}\" ]"; then
+            continue
+        fi
+        if ! declare -g "${var_name}=${values_from_env_file["${var_name}"]}"; then
+            ERROR "设置变量 ${var_name} 失败 (来源: .env 文件) "
         fi
     done
 
@@ -174,6 +150,46 @@ function load_config_from_app_env() {
     INFO "配置加载流程执行完毕。"
 }
 
+# 生成 nginx 配置，仅为 envsubst 单次调用传入模板变量。
+function render_nginx_config() {
+    local https_server_conf
+    if [ "${ENABLE_SSL}" = "true" ]; then
+        https_server_conf=$(cat <<EOF
+    server {
+        include /etc/nginx/mime.types;
+        default_type application/octet-stream;
+
+        listen ${SSL_NGINX_PORT:-443} ssl;
+        listen [::]:${SSL_NGINX_PORT:-443} ssl;
+        server_name ${SSL_DOMAIN:-moviepilot};
+
+        # SSL证书路径
+        ssl_certificate ${CONFIG_DIR}/certs/latest/fullchain.pem;
+        ssl_certificate_key ${CONFIG_DIR}/certs/latest/privkey.pem;
+
+        # SSL安全配置
+        ssl_protocols TLSv1.2 TLSv1.3;
+        ssl_ciphers 'ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384';
+        ssl_prefer_server_ciphers on;
+        ssl_session_cache shared:SSL:10m;
+        ssl_session_timeout 10m;
+
+        # 公共配置
+        include common.conf;
+    }
+EOF
+)
+        else
+            https_server_conf="# HTTPS未启用"
+        fi
+
+    NGINX_PORT="${NGINX_PORT}" \
+        PORT="${PORT}" \
+        NGINX_CLIENT_MAX_BODY_SIZE="${NGINX_CLIENT_MAX_BODY_SIZE}" \
+        HTTPS_SERVER_CONF="${https_server_conf}" \
+        envsubst '${NGINX_PORT}${PORT}${NGINX_CLIENT_MAX_BODY_SIZE}${HTTPS_SERVER_CONF}' < /etc/nginx/nginx.template.conf > /etc/nginx/nginx.conf
+}
+
 # 优雅退出
 function graceful_exit() {
     local exit_code=${1:-0}
@@ -265,52 +281,21 @@ if [ -f "${ONE_SHOT_UPDATE_FLAG}" ]; then
     fi
     if [ "${ONE_SHOT_UPDATE_MODE}" = "release" ] || [ "${ONE_SHOT_UPDATE_MODE}" = "dev" ]; then
         INFO "检测到一次性升级标记，本次启动将执行 ${ONE_SHOT_UPDATE_MODE} 升级..."
-        export MOVIEPILOT_AUTO_UPDATE="${ONE_SHOT_UPDATE_MODE}"
+        MOVIEPILOT_AUTO_UPDATE="${ONE_SHOT_UPDATE_MODE}"
         ONE_SHOT_UPDATE_APPLIED="true"
     elif [ -n "${ONE_SHOT_UPDATE_MODE}" ]; then
         WARN "检测到无效的一次性升级模式：${ONE_SHOT_UPDATE_MODE}，已忽略"
     fi
 fi
 
-# 生成HTTPS配置块
-if [ "${ENABLE_SSL}" = "true" ]; then
-    export HTTPS_SERVER_CONF=$(cat <<EOF
-    server {
-        include /etc/nginx/mime.types;
-        default_type application/octet-stream;
-
-        listen ${SSL_NGINX_PORT:-443} ssl;
-        listen [::]:${SSL_NGINX_PORT:-443} ssl;
-        server_name ${SSL_DOMAIN:-moviepilot};
-
-        # SSL证书路径
-        ssl_certificate ${CONFIG_DIR}/certs/latest/fullchain.pem;
-        ssl_certificate_key ${CONFIG_DIR}/certs/latest/privkey.pem;
-
-        # SSL安全配置
-        ssl_protocols TLSv1.2 TLSv1.3;
-        ssl_ciphers 'ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384';
-        ssl_prefer_server_ciphers on;
-        ssl_session_cache shared:SSL:10m;
-        ssl_session_timeout 10m;
-
-        # 公共配置
-        include common.conf;
-    }
-EOF
-)
-else
-    export HTTPS_SERVER_CONF="# HTTPS未启用"
-fi
-
-# 使用 `envsubst` 将模板文件中的 ${NGINX_PORT} 替换为实际的环境变量值
-envsubst '${NGINX_PORT}${PORT}${NGINX_CLIENT_MAX_BODY_SIZE}${ENABLE_SSL}${HTTPS_SERVER_CONF}' < /etc/nginx/nginx.template.conf > /etc/nginx/nginx.conf
+# 使用env配置渲染 nginx 配置
+render_nginx_config
 
 # 自动更新
 cd /
 source /usr/local/bin/mp_update.sh
 if [ "${ONE_SHOT_UPDATE_APPLIED}" = "true" ]; then
-    export MOVIEPILOT_AUTO_UPDATE="${MOVIEPILOT_AUTO_UPDATE_ORIGINAL}"
+    MOVIEPILOT_AUTO_UPDATE="${MOVIEPILOT_AUTO_UPDATE_ORIGINAL}"
 fi
 cd /app || exit
 
@@ -375,22 +360,6 @@ fi
 # 设置后端服务权限掩码
 umask "${UMASK}"
 
-# 清除非系统环境导入的变量，保证转移到 dumb-init 的时候，不会带入不必要的环境变量
-INFO "准备为 Python 应用清理的非系统环境导入的变量..."
-if [ ${#VARS_SET_BY_SCRIPT[@]} -gt 0 ]; then
-    for var_to_unset in "${VARS_SET_BY_SCRIPT[@]}"; do
-        # 再次确认变量确实存在于当前环境中（虽然理论上应该存在）
-        if eval "[ -n \"\${${var_to_unset}+x}\" ]"; then
-            INFO "取消设置环境变量: ${var_to_unset}"
-            unset "${var_to_unset}"
-        else
-            WARN "变量 ${var_to_unset} 已不存在，无需取消设置。"
-        fi
-    done
-else
-    INFO "没有由非系统环境导入的变量需要清理。"
-fi
-
 # 启动后端服务
 INFO "→ 启动后端服务..."
 if [ "${START_NOGOSU:-false}" = "true" ]; then