Update Dockerfile

Dockerfile

@@ -14,7 +14,7 @@ RUN apt-get update && apt-get install -y python3 python3-venv curl gnupg build-e
     apt-get clean && rm -rf /var/lib/apt/lists/*
 
 # 设置 Python 虚拟环境
-ENV VIRTUAL_ENV=/opt/venv
+ENV VIRTUAL_ENV=$WORKDIR/venv
 RUN python3 -m venv $VIRTUAL_ENV && \
     $VIRTUAL_ENV/bin/pip install --upgrade pip && \
     $VIRTUAL_ENV/bin/pip install $requirements
@@ -53,7 +53,7 @@ ENV POSTGRES_USER=${POSTGRES_USER} \
     DB_POSTGRESDB_PASSWORD=${POSTGRES_PASSWORD} \
     DB_POSTGRESDB_DATABASE=${POSTGRES_DB} \
     VIRTUAL_ENV=/opt/venv \
-    PATH="$VIRTUAL_ENV/bin:/usr/local/lib/node_modules/n8n/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$PATH"
+    PATH="${VIRTUAL_ENV}/bin:/usr/local/lib/node_modules/n8n/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$PATH"
 
 # 复制构建阶段的 Node.js 和 n8n
 COPY --from=builder /usr/local/bin/node /usr/local/bin/