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This article mainly introduces how to make Docker deploy Apache Tomcat automatically. It is very detailed and has a certain reference value. Friends who are interested must finish it!

Introduction

This article will talk about:

Extend the official Dockerfile of Tomcat

Build a new mirror

Launch the container from a modified new image

Deploy RESTful's Web service in the container and test

Apache Tomcat

Use docker search to find the most popular (and official) Docker Tomcat containers:

The output is as follows:

Conclusion

What is important?

We don't need to install Tomcat, but we need to define it in Dockerfile and launch the container from the image. It seems a little more complicated than downloading Tomcat, unzipping, and running startup scripts.

The benefits of this include:

Not all applications are as easy to install as Tomcat.

Almost all applications require additional configuration after installation.

The function of Docker is similar to that of Vagrant/Puppet/Chef/Ansible and so on. You need to write a script to define the environment, and then the build tool can automatically build the environment. The advantage of Docker here is that it is lighter than a virtual machine. In most cases, it is a waste of resources to take up an entire virtual opportunity just to use Tomcat. And many programmers work on laptops, so it is difficult to start multiple virtual machines at the same time.

This is the third benefit of Docker: you can start multiple containers from the same image. Starting multiple containers takes much less resources than starting multiple virtual machines, and the startup time is very fast.

The above is all the contents of the article "how to make Docker deploy Apache Tomcat automatically". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

Original link: http://www.dockone.io/article/285

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