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What is the LABEL instruction good for in Docker?

Experience Level: Senior
Tags: Docker

Answer

The LABEL instruction adds metadata to an image. A LABEL is a key-value pair. To include spaces within a LABEL value, use quotes and backslashes as you would in command-line parsing.

A few usage examples:

LABEL "com.example.vendor"="My Company"
LABEL com.example.label-with-value="foo"
LABEL version="1.0"
LABEL description="Label with multiple-line text \
is supported as well."

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