Always pin versions in apt-get install

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Metadata

ID: docker-best-practices/apt-pin-version

Language: Docker

Severity: Notice

Category: Best Practices

Description

When using apt-get install, pin the version to avoid unwanted upgrades and undefined behavior.

Non-Compliant Code Examples

FROM debian:12

RUN set -eux; \
    apt-get update; \
    apt-get install -y curl git gcc g++ make cmake; \
    rm -rf /var/cache/apt/archives /var/lib/apt/lists/*

FROM debian:12
RUN apt-get install python

RUN apt-get update && \
    apt-get install -y --no-install-recommends openjdk-19-jdk && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/ /var/cache/oracle*

Compliant Code Examples

FROM debian:12
RUN apt-get install python=3.11