arm32v7/debian Docker Image

Note: this is the "per-architecture" repository for the arm32v7 builds of https://hub.docker.com/_/debian -- for more information, see https://github.com/docker-library/official-images#architectures-other-than-amd64 and https://github.com/docker-library/faq#an-images-source-changed-in-git-now-what.

Quick reference

• Maintained by:
  Debian Developers https://qa.debian.org/developer.php?login=tianon and https://qa.debian.org/developer.php?login=paultag

• Where to get help:
  https://dockr.ly/comm-slack, Server Fault, https://unix.stackexchange.com/help/on-topic, or https://stackoverflow.com/help/on-topic

Supported tags and respective Dockerfile links

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/bookworm/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/bookworm/backports/Dockerfile

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/bookworm/slim/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/experimental/Dockerfile

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/forky/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/forky/backports/Dockerfile

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/forky/slim/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/oldstable/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/oldstable/backports/Dockerfile

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/oldstable/slim/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/rc-buggy/Dockerfile

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/sid/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/sid/slim/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/stable/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/stable/backports/Dockerfile

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/stable/slim/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/testing/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/testing/backports/Dockerfile

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/testing/slim/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/trixie/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/trixie/backports/Dockerfile

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/trixie/slim/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/unstable/oci/index.json

• https://github.com/debuerreotype/docker-debian-artifacts/blob/3f7438c82de0de3c67d1f2553c91628913a654cf/unstable/slim/oci/index.json

Quick reference (cont.)

• Where to file issues:
  https://github.com/debuerreotype/docker-debian-artifacts/issues?q=is:issue+is:pr

• Supported architectures: (https://github.com/docker-library/official-images#architectures-other-than-amd64)
  https://hub.docker.com/r/amd64/debian/, https://hub.docker.com/r/arm32v5/debian/, https://hub.docker.com/r/arm32v7/debian/, https://hub.docker.com/r/arm64v8/debian/, https://hub.docker.com/r/i386/debian/, https://hub.docker.com/r/ppc64le/debian/, https://hub.docker.com/r/riscv64/debian/, https://hub.docker.com/r/s390x/debian/

• Published image artifact details:
  https://github.com/docker-library/repo-info/blob/master/repos/debian (https://github.com/docker-library/repo-info/commits/master/repos/debian)
  (image metadata, transfer size, etc)

• Image updates:
  https://github.com/docker-library/official-images/issues?q=label%3Alibrary%2Fdebian
  https://github.com/docker-library/official-images/blob/master/library/debian (https://github.com/docker-library/official-images/commits/master/library/debian)

• Source of this description:
  https://github.com/docker-library/docs/tree/master/debian (https://github.com/docker-library/docs/commits/master/debian)

What is Debian?

Debian is an operating system which is composed primarily of free and open-source software, most of which is under the GNU General Public License, and developed by a group of individuals known as the Debian project. Debian is one of the most popular Linux distributions for personal computers and network servers, and has been used as a base for several other Linux distributions.

***.org/wiki/Debian

About this image

The images in this repository are intended to be as minimal as possible (because of the immutable/layered nature of containers, it's much easier to add than it is to remove). More specifically, they're built from https://manpages.debian.org/stable/debootstrap/debootstrap.8.en.html#variant=minbase_buildd_fakechroot, which only installs "required" packages, and thus creates the smallest possible footprint that is still "Debian" (as defined/managed by https://www.debian.org/intro/organization#distribution within the project).

The arm32v7/debian:latest tag will always point the latest stable release. Stable releases are also tagged with their version (ie, arm32v7/debian:11 is an alias for arm32v7/debian:bullseye, arm32v7/debian:10 is an alias for arm32v7/debian:buster, etc).

The rolling tags (arm32v7/debian:stable, arm32v7/debian:testing, etc) use the rolling suite names in their /etc/apt/sources.list file (ie, deb http://deb.debian.org/debian testing main).

The mirror of choice for these images is https://deb.debian.org so that it's as reliable as possible for the largest subset of users (and is also the default mirror for debootstrap as of https://anonscm.debian.org/cgit/d-i/debootstrap.git/commit/?id=9e8bc60ad1ccf3a25ce7890526b70059f3e770de). See the https://deb.debian.org for more information.

If you find yourself needing a Debian release which is EOL (and thus only available from [***] you should check out https://hub.docker.com/r/debian/eol/, which includes tags for Debian releases as far back as Potato (Debian 2.2), the first release to fully utilize APT.

Locales

Given that it is a faithful "minbase" install of Debian, this image only includes the C, C.UTF-8, and POSIX locales by default. For most uses requiring a UTF-8 locale, C.UTF-8 is likely sufficient (-e LANG=C.UTF-8 or ENV LANG C.UTF-8).

For uses where that is not sufficient, other locales can be installed/generated via the locales package. https://github.com/docker-library/postgres/blob/69bc540ecfffecce72d49fa7e4a46680350037f9/9.6/Dockerfile#L21-L24, copied below:

dockerfile
RUN apt-get update && apt-get install -y locales && rm -rf /var/lib/apt/lists/* \
	&& localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
ENV LANG en_US.utf8

How It's Made

The rootfs tarballs for this image are built using https://github.com/debuerreotype/debuerreotype, with an explicit goal being that they are transparent and reproducible. Using the same toolchain, it should be possible to regenerate (clean-room!) the same tarballs used for building the official Debian images. https://github.com/debuerreotype/debuerreotype/blob/master/examples/debian.sh (and the debian-all.sh companion/wrapper) is the canonical entrypoint used for creating the artifacts published in this image (via a process similar to the docker-run.sh included in the root of that repository).

Additionally, the scripts in https://github.com/debuerreotype/docker-debian-artifacts are used to create each tag's Dockerfile and collect architecture-specific tarballs into https://github.com/debuerreotype/docker-debian-artifacts/branches, which also contain extra metadata about the artifacts included in each build, such as explicit package versions included in the base image (rootfs.manifest), the exact snapshot.debian.org timestamp used for debuerreotype invocation (rootfs.debuerreotype-epoch), the sources.list found in the image (rootfs.sources-list) and the one used during image creation (rootfs.sources-list-snapshot), etc.

For convenience, the SHA256 checksum (and full build command) for each of the primary rootfs.tar.xz artifacts are also published at docker.debian.net.

Image Variants

arm32v7/debian:<suite>-slim

These tags are an experiment in providing a slimmer base (removing some extra files that are normally not necessary within containers, such as man pages and documentation), and are definitely subject to change.

See the debuerreotype-slimify script (debuerreotype linked above) for more details about what gets removed during the "slimification" process.

License

View https://www.debian.org/social_contract#guidelines for the software contained in this image.

As with all Docker images, these likely also contain other software which may be under other licenses (such as Bash, etc from the base distribution, along with any direct or indirect dependencies of the primary software being contained).

Some additional license information which was able to be auto-detected might be found in https://github.com/docker-library/repo-info/tree/master/repos/debian.

As for any pre-built image usage, it is the image user's responsibility to ensure that any use of this image complies with any relevant licenses for all software contained within.