sprakbankental/ruby repository overview

⁠sprakbankental/ruby v1.6

Språkbanken Tal's Ruby resource image. Provides a pinned Ruby installation and the Asciidoctor gem family, built from source on top of sprakbankental/os-ubuntu.

This is a resource cache image: its primary purpose is to supply Ruby and gems to downstream images via COPY --from=. It can also be run directly.

⁠What's included

⁠Ruby

• Ruby 3.4.9 — built from source; installed at /opt/ruby
• /usr/bin/ruby and /usr/bin/gem symlinks

⁠Gems

Installed into /opt/rubygems (GEM_HOME):

• asciidoctor 2.0.26
• asciidoctor-pdf 2.3.24
• asciidoctor-bibtex 0.9.0
• asciidoctor-epub3 2.3.0

⁠Command-line tools

Direct symlinks to gem binaries:

• /usr/bin/asciidoctor
• /usr/bin/asciidoctor-pdf
• /usr/bin/asciidoctor-epub3

SBTal wrapper scripts with default options:

• /usr/bin/adoc — runs asciidoctor with SBTal defaults
• /usr/bin/adoc-pdf — runs asciidoctor-pdf with SBTal defaults
• /usr/bin/adoc-epub3 — runs asciidoctor-epub3 with SBTal defaults

GEM_HOME is exported into downstream runtime environments automatically.

⁠Usage

⁠As a resource cache in a downstream Dockerfile

ARG OCI_BASIC_VERSION=stable

FROM sprakbankental/ruby:${OCI_BASIC_VERSION}-aggr AS aggr-ruby

FROM sprakbankental/os-ubuntu:${OCI_BASIC_VERSION} AS prod-env
# ...

FROM prod-env AS prod
RUN --mount=type=bind,from=aggr-ruby,source=/artifacts,target=/artifacts \
    cp -a /artifacts/. /

The -aggr tag carries the artifact tree only (no OS layer). Use it as the source for COPY --from= or bind-mount operations.

⁠Running directly

docker run --rm sprakbankental/ruby:stable ruby --version
docker run --rm sprakbankental/ruby:stable asciidoctor --version

⁠Tags

Follows the same tag scheme as sprakbankental/os-ubuntu. See that image for the full tag reference.

Each version publishes two targets: