Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Open your browser to http://<docker host url>:8080."

A block of code is set as follows:

--- 
- hosts: localhost 
  vars: 
    http_port: 80 
    max_clients: 200 
  remote_user: root 
  tasks: 
  - name: ensure apache is at the latest version 
    yum: name=httpd state=latest 

Any command-line input or output is written as follows:

docker exec -it <hash> bash 

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this: "Try creating a new bug with the File a Bug option."

Warnings or important notes appear like this.

Tips and tricks appear like this.