![\"Package](\"https://user-images.githubusercontent.com/9599/112061886-5cf77b00-8b1c-11eb-8f4c-91dce388dc33.png\")
\n\nThe recipe that ended up working for me was to install `software-properties-common` to get the `apt-get-repository` command, then use that to install a package from `sid`:\n\n```dockerfile\nRUN apt-get update && \\\n apt-get -y --no-install-recommends install software-properties-common && \\\n add-apt-repository \"deb http://httpredir.debian.org/debian sid main\" && \\\n apt-get update && \\\n apt-get -t sid install -y --no-install-recommends libsqlite3-mod-spatialite\n```\n\nHere's the full Dockerfile I used:\n\n```dockerfile\nFROM python:3.9.2-slim-buster as build\n\n# software-properties-common provides add-apt-repository\nRUN apt-get update && \\\n apt-get -y --no-install-recommends install software-properties-common && \\\n add-apt-repository \"deb http://httpredir.debian.org/debian sid main\" && \\\n apt-get update && \\\n apt-get -t sid install -y --no-install-recommends libsqlite3-mod-spatialite && \\\n apt clean && \\\n rm -rf /var/lib/apt && \\\n rm -rf /var/lib/dpkg\n\nRUN pip install datasette && \\\n find /usr/local/lib -name '__pycache__' | xargs rm -r && \\\n rm -rf /root/.cache/pip\n\nEXPOSE 8001\nCMD [\"datasette\"]\n```", "html": "For Datasette #1249 I wanted to build a Docker image from the python:3.9.2-slim-buster base image (\"buster\" is the current stable release of Debian) but include a single package from \"sid\", the unstable Debian distribution.
I needed to do this because the latest version of SpatiaLite, version 5, was available in sid but not in buster (which only has 4.3.0a):
https://packages.debian.org/search?keywords=spatialite
\n
The recipe that ended up working for me was to install software-properties-common to get the apt-get-repository command, then use that to install a package from sid:
RUN apt-get update && \\\n apt-get -y --no-install-recommends install software-properties-common && \\\n add-apt-repository \"deb http://httpredir.debian.org/debian sid main\" && \\\n apt-get update && \\\n apt-get -t sid install -y --no-install-recommends libsqlite3-mod-spatialiteHere's the full Dockerfile I used:
\nFROM python:3.9.2-slim-buster as build\n\n# software-properties-common provides add-apt-repository\nRUN apt-get update && \\\n apt-get -y --no-install-recommends install software-properties-common && \\\n add-apt-repository \"deb http://httpredir.debian.org/debian sid main\" && \\\n apt-get update && \\\n apt-get -t sid install -y --no-install-recommends libsqlite3-mod-spatialite && \\\n apt clean && \\\n rm -rf /var/lib/apt && \\\n rm -rf /var/lib/dpkg\n\nRUN pip install datasette && \\\n find /usr/local/lib -name '__pycache__' | xargs rm -r && \\\n rm -rf /root/.cache/pip\n\nEXPOSE 8001\nCMD [\"datasette\"]