Shulou(Shulou.com)06/01 Report--

This article mainly introduces how to use Dockerfile, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Example

The example Dockerfile made almost all the mistakes (of course I did it on purpose). Next, I will optimize it step by step. Suppose we need to run a Node.js application using Docker, and here is its Dockerfile (the CMD instruction is too complex, so I simplified it, it's wrong, for reference only).

FROM ubuntuADD. / appRUN apt-get update RUN apt-get upgrade-y RUN apt-get install-y nodejs ssh mysql RUN cd / app & & npm install# this should start three processes, mysql and ssh# in the background and node app in foreground# isn't it beautifully terrible?

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