fix: correct path for startup script in Dockerfile

Author: linyuchen

docker/Dockerfile

@@ -24,7 +24,7 @@ RUN apk add unzip wget
 
 WORKDIR /app/llonebot
 
-COPY docker/llonebot/startup.sh /startup.sh
+COPY docker/startup.sh /startup.sh
 
 RUN chmod +x /startup.sh
 
@@ -35,4 +35,4 @@ RUN wget https://github.com/LLOneBot/LLOneBot/releases/download/v$LLONEBOT_VERSI
 RUN unzip /app/llonebot.zip -d /app/llonebot \
     && rm /app/llonebot.zip
 
-ENTRYPOINT ["/startup.sh"]
+ENTRYPOINT ["/startup.sh"]