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Do not use apt as it is meant to be an end-user tool, use apt-get or apt-cache instead.
PropertyValue
SeverityWarning
CategoryBest Practice
DefaultEnabled
Auto-fixYes (--fix)

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Description

apt is discouraged by the Linux distributions as an unattended tool as its interface may change between versions. Use the more stable apt-get and apt-cache commands in Dockerfiles instead.

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Examples

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Problematic code

FROM busybox
RUN apt install curl=1.1.0

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Correct code

FROM busybox
RUN apt-get install curl=1.1.0

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Auto-fix

Replaces apt with apt-get or apt-cache depending on the subcommand.
  • Safe fix (FixSafe): install, remove, update, upgrade, autoremove, purge, clean, autoclean are replaced with apt-get
  • Suggestion fix (FixSuggestion): search, show, policy are replaced with apt-cache
# Before
RUN apt install -y curl && apt search python

# After (with --fix)
RUN apt-get install -y curl && apt-cache search python

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Reference