Attaching to running containers in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to attach your terminal to a running Docker container named myapp.

Docker

docker [1] myapp

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

Aattach

Brun

Cbuild

Dstop

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' instead of 'attach' which starts a new container instead of connecting.

Using 'stop' which stops the container instead of attaching.

The docker attach command connects your terminal to a running container's main process.

2fill in blank

medium

Complete the command to attach to a running container with ID abc123 and keep STDIN open.

Docker

docker attach --[1] abc123

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

Ano-stdin

Binteractive

Csig-proxy

Ddetach-keys

Attempts:

3 left

💡 Hint

Common Mistakes

Using '--no-stdin' which disables input instead of keeping it open.

Confusing '--detach-keys' with signal forwarding.

The --sig-proxy option forwards signals to the container, keeping STDIN open during attach.

3fill in blank

hard

Fix the error in the command to attach to a container named webapp but keep STDIN open.

Docker

docker attach --[1] webapp

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

Ano-stdin

Binteractive

Cdetach-keys

Dsig-proxy

Attempts:

3 left

💡 Hint

Common Mistakes

Using '--no-stdin' which disables input.

Using '--detach-keys' which sets keys to detach but doesn't keep STDIN open.

The correct option to keep STDIN open and forward signals is --sig-proxy.

4fill in blank

hard

Fill both blanks to create a command that attaches to container db and sets custom detach keys to ctrl-x.

Docker

docker attach --[1] ctrl-x --[2] db

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

Adetach-keys

Bsig-proxy

C--detach-keys

D--sig-proxy

Attempts:

3 left

💡 Hint

Common Mistakes

Using single dash options which are invalid.

Mixing option names without dashes.

The correct syntax uses --detach-keys ctrl-x to set detach keys and --sig-proxy to forward signals.

5fill in blank

hard

Fill all three blanks to attach to container cache, keep STDIN open, and set detach keys to ctrl-p,ctrl-q.

Docker

docker attach [1] [2] ctrl-p,ctrl-q [3] cache

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

A--sig-proxy

B--detach-keys

C--no-stdin

D--interactive

Attempts:

3 left

💡 Hint

Common Mistakes

Using '--no-stdin' which disables input.

Forgetting to set detach keys properly.

Omitting interactive mode option.

Use --sig-proxy to forward signals, --detach-keys to set keys, and --interactive to keep STDIN open.