Copying files to and from containers in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to copy a file named app.log from your local machine to a running container named webapp.

Docker

docker cp app.log [1]:/var/log/

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

Awebapp:/var/log

Bwebapp

Cwebapp:/app

Dwebapp:/home

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to include the colon between container name and path.

Using only the container name without the destination path.

The correct syntax to copy a file into a container is docker cp source_path container_name:destination_path. Here, webapp:/var/log specifies the container and the destination folder.

2fill in blank

medium

Complete the command to copy a file named config.yaml from a container named db to your local directory /configs.

Docker

docker cp [1]:/etc/config.yaml /configs/

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

Adb

Bdb:/etc/config.yaml

Cdb:/etc

Ddb:/config.yaml

Attempts:

3 left

💡 Hint

Common Mistakes

Specifying only the container name without the file path.

Using a directory path instead of the full file path.

To copy a file from a container, specify container_name:path_to_file. Here, db:/etc/config.yaml points to the exact file inside the container.

3fill in blank

hard

Fix the error in the command that tries to copy data.csv from the container analytics to the current directory.

Docker

docker cp analytics[1]data.csv .

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

A:

B/

C:/

D::

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the colon.

Using double colons or no slash after colon.

The correct syntax requires a colon and a slash to separate the container name and the file path: container_name:/path/to/file. So analytics:/data.csv is correct.

4fill in blank

hard

Fill both blanks to copy the entire directory /app/data from the container backend to the local directory ./backup.

Docker

docker cp [1] [2]

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

Abackend:/app/data

B./backup

C/backup

Dbackend:/backup

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping source and destination.

Using incorrect paths or missing colon.

The source is the directory inside the container: backend:/app/data. The destination is the local directory: ./backup.

5fill in blank

hard

Fill all three blanks to copy the file settings.json from the local directory ./configs to the container frontend inside the path /usr/src/app/config.

Docker

docker cp [1]/[2] [3]:/usr/src/app/config/

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

A./configs

Bsettings.json

Cfrontend

D/usr/src/app

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up container name and local path.

Forgetting to include the file name in the source path.

The source is the local file path: ./configs/settings.json. The destination is the container and path: frontend:/usr/src/app/config/.