Running a command in a service in Docker

What this snippet does

compose exec targets a service by name instead of a container id.

Expected output

 ?column?
----------
        1

Why practise typing this

Typing compose basics code builds muscle memory for the symbols and indentation Docker uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.

More Docker practice

• Single serviceCompose Basics · beginner
• Building from a DockerfileCompose Basics · beginner
• Starting the stackCompose Basics · beginner
• down removes the networkCompose Basics · beginner
• depends_on does not wait for readinessCompose Basics · intermediate
• Waiting on a healthcheckCompose Basics · intermediate