Conventions used

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

Code in text: Indicates code words in text, container names, folder names, filenames, file extensions, pathnames, dummy URLs, and user input. Here is an example: "This file needs to be added to the conf.d directory on the host."

A block of code or Dockerfile is set as follows:

FROM ubuntu:bionic
RUN apt-get -qq update && \
apt-get -qq install -y nodejs npm > /dev/null
RUN mkdir -p /app/public /app/server
COPY src/package.json* /app
WORKDIR /app
RUN npm -s install

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

FROM alpine:20191114
RUN apk update && \
apk add nodejs nodejs-npm
RUN addgroup -S app && adduser -S -G app app
RUN mkdir -p /app/public /app/server
ADD src/package.json* /app/

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

$ cp docker_daemon.yaml  /path/to/conf.d/
$ vim /path/to/conf.d/conf.yaml

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "You can do this by clicking the Get It Now button on the Azure Marketplace website."

Tips or important notes

Appear like this.