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All Projects → FNNDSC → Ubuntu Python3

FNNDSC / Ubuntu Python3

Source for a slim Ubuntu-based Python3 image

Labels

dockerfile

fnndsc/ubuntu-python3

Build

https://hub.docker.com/r/fnndsc/ubuntu-python3/tags

A base docker image for python3 in ubuntu:latest

  • fnndsc/ubuntu-python3 uses ENTRYPOINT ["python3"]
  • fnndsc/python uses CMD ["python3"]

Supported Platforms

  • x86_64 linux/amd64
  • PowerPC linux/ppc64le
  • ARM64 linux/arm64

Changelog

03-Aug-2018

  • Update for 18.04 (LTS) base image.

13-May-2020

  • Update for 20.04 (LTS) base image.

26-May-2020

  • Automatic multiarch build on Travis.

09-Jun-2020

  • Add DEBIAN_FRONTEND=noninteractive env variable.

03-Feb-2021

  • migrate to Github Actions
  • automatic tagging of Ubuntu and Python version
  • Add ARM support
  • Add .dockerignore

Manifest List

"Manifest list" is the technically correct term for a multi-architectural docker container image.

Background

A single tag in a Docker registry (e.g. docker.io/ubuntu:bionic or docker.io/fnndsc/ubuntu-python3:latest) can refer to multiple images for different architectures. When a local docker engine executes docker pull or FROM in a Dockerfile, the correct image that matches the host's native architecture is used.

Images that use FROM fnndsc/ubuntu-python3:latest in their Dockerfile (most fnndsc/pl-* plugins for ChRIS) can also be built for multiple architectures. You can simply build the same Dockerfile on different hosts without modification, or follow the steps below to build cross-platform.

Note that Dockerhub cannot do autobuilds for non-x86_64 images.. Autobuilds from Dockerhub (again, most fnndsc/pl-*) are only for x86_64. fnndsc/ubuntu-python3 is built using Github Actions, which is a bit less convenient.

Local Build

Linux x86_64 (check with uname -sm) can use QEMU emulation to do cross-platform builds for foreign architectures.

First, make sure you have Docker CLI experimetnal features enabled. https://github.com/docker/buildx#docker-ce

docker run --rm --privileged aptman/qus -s -- -p ppc64le
docker buildx create --name moc_builder --use
docker buildx build -t fnndsc/ubuntu-python3 --platform linux/amd64,linux/ppc64le .
# clean up
docker buildx rm
docker run --rm --privileged aptman/qus -- -r
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