Continuous Delivery with Docker and Jenkins

Creating a shared library project

We start by creating a new Git project, in which we put the shared library code. Each Jenkins step is expressed as a Groovy file located in the vars directory.

Let's create a sayHello step that takes the name parameter and echoes a simple message. This should be stored in the vars/sayHello.groovy file:

/*** Hello world step.*/def call(String name) {      echo "Hello $name!"}

Human-readable descriptions for shared library steps can be stored in the *.txt files. In our example, we could add the vars/sayHello.txt file with the step documentation.

When the library code is done, we need to push it to the repository, for example, as a new GitHub project.