Dockerfile無法運行cp命令在容器內移動文件

Question

嗨，我正在嘗試在容器內下載文件，並將此文件移至容器內的特定位置。

RUN wget https://storage.googleapis.com/hadoop-lib/gcs/gcs-connector-latest-hadoop2.jar 
RUN cp gcs-connector-latest-hadoop2.jar /opt/spark-2.2.1-bin-hadoop2.7/jars/
RUN cp /opt/spark-2.2.1-bin-hadoop2.7/conf/spark-defaults.conf.template /opt/spark-2.2.1-bin-hadoop2.7/conf/spark-defaults.conf
RUN echo "spark.hadoop.google.cloud.auth.service.account.enable true" > /opt/spark-2.2.1-bin-hadoop2.7/conf/spark-defaults.conf

但這失敗並顯示以下錯誤：

Step 44/46 : RUN cp gcs-connector-latest-hadoop2.jar /opt/spark-2.2.1-bin-hadoop2.7/jars/
 ---> Running in 8c81d9871377
cp: cannot create regular file '/opt/spark-2.2.1-bin-hadoop2.7/jars/': No such file or directory
The command '/bin/sh -c cp gcs-connector-latest-hadoop2.jar /opt/spark-2.2.1-bin-hadoop2.7/jars/' returned a non-zero code: 1

EDIT-1 錯誤截圖

我已經嘗試過提到的解決方案，現在出現以下錯誤：

卸下中間容器e885431017e8步驟43/44：復制/opt/spark-2.2.1-bin-hadoop2.7/conf/spark-defaults.conf.template /opt/spark-2.2.1-bin-hadoop2.7/conf /spark-defaults.conf lstat opt / spark-2.2.1-bin-hadoop2.7 / conf / spark-defaults.conf.template：沒有這樣的文件或目錄

Answer 1

您的容器中是否已有路徑/opt/spark-2.2.1-bin-hadoop2.7/jars/ ？

如果沒有，請在cp命令前添加：

mkdir -p /opt/spark-2.2.1-bin-hadoop2.7/jars/

然后嘗試像這樣復制：

cp gcs-connector-latest-hadoop2.jar /opt/spark-2.2.1-bin-hadoop2.7/jars/gcs-connector-latest-hadoop2.jar

編輯后：

您運行mkdir並嘗試從中復制，因為該文件夾為空，所以該方法不起作用！

Answer 2

為什么不直接下載到該文件夾​​？ 並使用COPY復制容器中的文件COPY

RUN wget https://storage.googleapis.com/hadoop-lib/gcs/gcs-connector-latest-hadoop2.jar -P /opt/spark-2.2.1-bin-hadoop2.7/jars/
COPY /opt/spark-2.2.1-bin-hadoop2.7/conf/spark-defaults.conf.template /opt/spark-2.2.1-bin-hadoop2.7/conf/spark-defaults.conf

假設： /opt/spark-2.2.1-bin-hadoop2.7/jars/文件夾存在