在docker中从CMD传递参数

本文介绍了在docker中从CMD传递参数的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我已经了解了Dockerfile。

I have got below Dockerfile.

FROM node:boron # Create app directory RUN mkdir -p /usr/src/akamai WORKDIR /usr/src/akamai # Install app dependencies COPY package.json /usr/src/akamai/ RUN npm install # Bundle app source COPY . /usr/src/akamai #EXPOSE 8080 CMD ["node", "src/akamai-client.js", "purge", "www.example/main.css"]

下面是我在docker映像构建后从CMD运行的命令

Below is the command which I run from CMD after the docker image build

docker run -it "akamaiapi" //It executes the CMD command as given in above Dockerfile.

CMD [ node， src / akamai-client.js，清除 ， www.example/main.css ] //我希望直接从docker命令传递这两个参数，而不是在Dockerfile中进行硬编码，因此我的Docker运行命令可能像这样：

CMD ["node", "src/akamai-client.js", "purge", "www.example/main.css"] //I want these two arguments directly passed from docker command instead hard-coded in Dockerfile, so my Docker run commands could be like these:

docker run -it "akamaiapi" queue docker run -it "akamaiapi" purge "www.example/main.css" docker run -it "akamaiapi" purge-status "b9f80d960602b9f80d960602b9f80d960602"

推荐答案

您可以通过组合来实现 ENTRYPOINT 和 CMD 。

You can do that through a combination of ENTRYPOINT and CMD.

• ENT RYPOINT 指定在容器启动时始终执行的命令。

• The ENTRYPOINT specifies a command that will always be executed when the container starts.

CMD 指定要馈送到的参数 ENTRYPOINT 。

因此， Dockerfile ：

FROM node:boron ... ENTRYPOINT ["node", "src/akamai-client.js"] CMD ["purge", "www.example/main.css"]

正在运行的容器的默认行为：

The default behavior of a running container:

docker run -it akamaiapi

就像命令：

node src/akamai-client.js purge "www.example/main.css"

如果您这样做：

docker run -it akamaiapi queue

包含中的基础执行er将是：

The underlying execution in the container would be like:

node src/akamai-client.js queue