Compose watch for development in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to start services in detached mode using Docker Compose.

Docker

docker-compose up -[1]

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

Ar

Bf

Cd

Ds

Attempts:

3 left

💡 Hint

Common Mistakes

Using -f which is for specifying a file

Using -r which is not a valid flag here

The -d flag runs Docker Compose services in detached mode, allowing the terminal to be free.

2fill in blank

medium

Complete the command to rebuild services before starting them.

Docker

docker-compose up --[1]

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

Aforce-recreate

Bbuild

Crebuild

Drestart

Attempts:

3 left

💡 Hint

Common Mistakes

Using --force-recreate which recreates containers but does not build images

Using --rebuild which is not a valid option

The --build option forces Docker Compose to build images before starting containers.

3fill in blank

hard

Fix the error in the command to watch file changes and restart services automatically.

Docker

docker-compose up -[1] --watch

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

Adetach

Bdetached

Cdetach-mode

Dd

Attempts:

3 left

💡 Hint

Common Mistakes

Using --watch which is not supported

Using incorrect long flags like --detached

The correct short flag for detached mode is -d. The long form is --detach, but --watch is not a valid Docker Compose flag.

4fill in blank

hard

Fill both blanks to create a service that watches for file changes and restarts automatically using a tool.

Docker

version: '3.8'\nservices:\n  app:\n    build: .\n    command: [1] --watch [2] app.js\n    volumes:\n      - .:/app\n    ports:\n      - '3000:3000'\n

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

Anodemon

Bnode

C--exec

D.

Attempts:

3 left

💡 Hint

Common Mistakes

Using node instead of nodemon

Using --exec which runs a command but does not watch files

nodemon is a tool that watches for file changes and restarts the Node.js app automatically. The --watch flag tells nodemon which files or folders to watch.

5fill in blank

hard

Fill all three blanks to define a Docker Compose service that uses a volume, sets environment variables, and runs a watch command.

Docker

version: '3.8'\nservices:\n  web:\n    build: .\n    volumes:\n      - [1]:/usr/src/app\n    environment:\n      - NODE_ENV=[2]\n    command: [3] --watch src\n    ports:\n      - '8080:8080'\n

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

A./app

Bdevelopment

Cnodemon

D./src

Attempts:

3 left

💡 Hint

Common Mistakes

Using ./src as volume instead of ./app

Setting NODE_ENV to production

Using node instead of nodemon

The volume maps the local ./app folder to the container path. The environment variable NODE_ENV is set to development for dev mode. The command uses nodemon to watch the src folder for changes.