Docker Compose with Nginx - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Docker Compose used for in the context of Nginx?

Docker Compose is used to define and run multi-container Docker applications, such as running Nginx together with other services like web apps or databases, using a single YAML file.

beginner

In a Docker Compose file, how do you specify the Nginx image to use?

You specify the Nginx image under the service with the key 'image', for example: image: nginx:latest

intermediate

How do you map a local Nginx configuration file into the Nginx container using Docker Compose?

Use the 'volumes' key to map the local config file to the container path, for example: volumes: - ./nginx.conf:/etc/nginx/nginx.conf:ro

beginner

What port does Nginx usually listen on, and how do you expose it in Docker Compose?

Nginx usually listens on port 80. In Docker Compose, expose it by mapping ports like: ports: - "80:80"

beginner

Why is it useful to use Docker Compose with Nginx for local development?

It allows you to easily start, stop, and configure Nginx alongside other services with one command, making development faster and more consistent.

Which key in a Docker Compose file defines the services to run?

A volumes

B containers

C images

D services

The 'services' key lists all the containers to run in Docker Compose.

How do you tell Docker Compose to map port 8080 on your computer to port 80 in the Nginx container?

A ports: - "80:8080"

B ports: - "8080:80"

C expose: 8080:80

D map_ports: 8080->80

The format is 'host_port:container_port', so '8080:80' maps local 8080 to container 80.

What does the ':ro' suffix mean when mounting a volume in Docker Compose?

A Read-only access

B Read and write access

C Remove on exit

D Restart option

':ro' means the volume is mounted as read-only inside the container.

Which command starts all services defined in a Docker Compose file?

A docker compose up

B docker run

C docker start all

D docker build

'docker compose up' starts all services defined in the compose file.

Where is the default Nginx configuration file located inside the container?

A /var/www/html/index.html

B /usr/local/nginx.conf

C /etc/nginx/nginx.conf

D /nginx/config.conf

The default Nginx config file is at '/etc/nginx/nginx.conf' inside the container.

Explain how to set up a basic Docker Compose file to run Nginx serving a static website.

Think about service name, image, ports, and volumes.

Describe the benefits of using Docker Compose with Nginx for managing multiple services.

Focus on convenience and environment consistency.