Official Nginx Docker image - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the Official Nginx Docker image?

It is a pre-built Docker image provided by the Nginx team that contains the Nginx web server ready to run inside a container.

beginner

How do you start an Nginx container using the official image?

Use the command: docker run --name mynginx -p 8080:80 nginx. This runs Nginx and maps port 80 inside the container to port 8080 on your computer.

beginner

Where can you find the Official Nginx Docker image?

On Docker Hub at https://hub.docker.com/_/nginx.

intermediate

How can you customize the Nginx configuration in the official Docker image?

You can mount your own configuration file into the container using a volume, for example: docker run -v /my/nginx.conf:/etc/nginx/nginx.conf:ro nginx.

beginner

What is the default port exposed by the Official Nginx Docker image?

Port 80 is the default port where Nginx listens inside the container.

Which command starts an Nginx container exposing port 80 inside the container to port 8080 on your host?

A docker run -p 8080:8080 nginx

B docker run -p 8080:80 nginx

C docker run -p 80:80 nginx

D docker run -p 80:8080 nginx

The syntax is -p hostPort:containerPort. So -p 8080:80 maps container port 80 to host port 8080.

Where is the Official Nginx Docker image hosted?

A Nginx official website

B GitHub

C Docker Hub

D AWS Marketplace

Official Docker images are hosted on Docker Hub, including the Nginx image.

How can you provide a custom Nginx configuration file to the container?

A By mounting a volume with the config file

B By editing the container's internal files directly

C By passing config as a command line argument

D By rebuilding the Docker image only

Mounting a volume with your config file is the easiest way to customize Nginx without rebuilding the image.

What is the default command run by the Official Nginx Docker image?

A nginx -g 'daemon off;'

B nginx -s reload

C bash

D service nginx start

The image runs Nginx in the foreground with nginx -g 'daemon off;' to keep the container running.

Which port does Nginx listen to inside the container by default?

A 443

B 22

C 8080

D 80

Nginx listens on port 80 by default inside the container.

Explain how to run the Official Nginx Docker image and access it from your browser.

Think about how ports inside and outside the container connect.

Describe how to customize the Nginx configuration when using the Official Docker image.

Consider how files from your computer can be shared with the container.