Debugging volume mount issues in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to mount a local directory /data to /app/data inside the container.

Docker

docker run -v [1]:/app/data myimage

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

A/data

B/app/data

C/data/app

D/app

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the local and container paths.

Using a container path as the local path.

The local directory /data should be mounted to /app/data inside the container using -v /data:/app/data.

2fill in blank

medium

Complete the command to run a container with a read-only volume mount of /config directory.

Docker

docker run -v /config:/app/config:[1] myimage

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

Areadwrite

Bro

Crw

Dreadonly

Attempts:

3 left

💡 Hint

Common Mistakes

Using readonly instead of ro.

Forgetting the colon before the option.

The :ro option mounts the volume as read-only inside the container.

3fill in blank

hard

Fix the error in the command to mount a host directory /var/logs to /logs inside the container.

Docker

docker run -v [1] myimage

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

A/var/logs

B/logs:/var/logs

C/var:/logs

D/var/logs:/logs

Attempts:

3 left

💡 Hint

Common Mistakes

Missing the colon separator.

Swapping host and container paths.

The correct syntax for volume mount is -v host_path:container_path. Here, /var/logs is the host path and /logs is the container path.

4fill in blank

hard

Fill both blanks to create a volume mount that maps /home/user/data on the host to /data in the container with read-write access.

Docker

docker run -v [1]:[2] myimage

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

A/home/user/data

B/data

Crw

Dro

Attempts:

3 left

💡 Hint

Common Mistakes

Adding read-write option explicitly when not needed.

Swapping the host and container paths.

The volume mount syntax is -v host_path:container_path. Read-write is default, so no extra option is needed.

5fill in blank

hard

Fill all three blanks to create a volume mount with /opt/config on the host mapped to /app/config in the container as read-only.

Docker

docker run -v [1]:[2]:[3] myimage

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

A/opt/config

B/app/config

Cro

Drw

Attempts:

3 left

💡 Hint

Common Mistakes

Using rw instead of ro for read-only mount.

Swapping host and container paths.

The correct volume mount is -v /opt/config:/app/config:ro to make it read-only inside the container.