Container to container communication in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to start a Docker container named 'webapp'.

Docker

docker run --name [1] -d nginx

Drag options to blanks, or click blank then click option'

Acache

Bwebapp

Cdatabase

Dbackend

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different container name than 'webapp'.

The --name option assigns the container a name. Here, 'webapp' is the container name.

2fill in blank

medium

Complete the Docker network creation command to allow containers to communicate.

Docker

docker network create [1]

Drag options to blanks, or click blank then click option'

Aisolated_net

Bbridge

Chost

Dnone

Attempts:

3 left

💡 Hint

Common Mistakes

Using default network driver names instead of a custom network name.

Creating a custom network named 'isolated_net' allows containers to communicate on that network.

3fill in blank

hard

Fix the error in the command to connect a container named 'db' to the network 'isolated_net'.

Docker

docker network [1] isolated_net db

Drag options to blanks, or click blank then click option'

Aconnect

Bjoin

Cattach

Dlink

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'attach' or 'link' instead of 'connect'.

The correct command to connect a container to a network is docker network connect <network> <container>.

4fill in blank

hard

Fill both blanks to run two containers on the same network 'isolated_net'.

Docker

docker run -d --name webapp --network [1] nginx
docker run -d --name db --network [2] mysql

Drag options to blanks, or click blank then click option'

Aisolated_net

Bbridge

Chost

Dnone

Attempts:

3 left

💡 Hint

Common Mistakes

Using different networks for each container.

Both containers must be on the same network 'isolated_net' to communicate.

5fill in blank

hard

Fill all three blanks to create a Docker Compose service for 'webapp' that connects to the 'isolated_net' network.

Docker

services:
  webapp:
    image: nginx
    networks:
      - [1]
networks:
  [2]:
    driver: [3]

Drag options to blanks, or click blank then click option'

Aisolated_net

Bbridge

Chost

Dnone

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'host' or 'none' as the driver.

The service uses the 'isolated_net' network, which is defined with the 'bridge' driver in Docker Compose.