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GH-1998: Support more locales in the Fuseki docker image #4054

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GH-1998: Support more locales in the Fuseki docker image #4054

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12 changes: 10 additions & 2 deletions jena-fuseki2/jena-fuseki-docker/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -61,13 +61,21 @@ RUN ./download.sh --chksum sha1 "$JAR_URL"

## -- Make reduced Java JDK

ARG JDEPS_EXTRA="jdk.crypto.cryptoki,jdk.crypto.ec"
## Provides locale data. Jdeps does not detect it because of SPI, so add it here.
ARG JDEPS_EXTRA="jdk.crypto.cryptoki,jdk.crypto.ec,jdk.localedata"

## Optional: comma-separated list of locale language tags to keep from jdk.localedata,
## e.g. "en,fr,de,fi". Leave empty to include all locales.
ARG JDK_LOCALES=""

RUN \
JDEPS="$(jdeps --multi-release base --print-module-deps --ignore-missing-deps ${FUSEKI_JAR})" && \
if [ -n "${JDK_LOCALES}" ] ; then LOCALE_OPT="--include-locales=${JDK_LOCALES}" ; else LOCALE_OPT="" ; fi && \
jlink \
--compress 2 --strip-debug --no-header-files --no-man-pages \
--output "${JAVA_MINIMAL}" \
--add-modules "${JDEPS},${JDEPS_EXTRA}"
--add-modules "${JDEPS},${JDEPS_EXTRA}" \
${LOCALE_OPT}

ADD entrypoint.sh .
ADD log4j2.properties .
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13 changes: 13 additions & 0 deletions jena-fuseki2/jena-fuseki-docker/README.md
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Expand Up @@ -77,6 +77,19 @@ The default layout in the container is:
| /fuseki/log4j2.properties | Logging configuration |
| /fuseki/databases/ | Directory for a volume for persistent databases |

## Locales

The image includes locale data for _all_ locales so that features such as
[ARQ collation](https://jena.apache.org/documentation/query/collation.html)
work correctly for languages other than English.

To reduce image size, restrict the build to a subset of locales with the
`JDK_LOCALES` build argument and a comma-separated list of language tags to include:

docker-compose build --build-arg JENA_VERSION=5.3.0 --build-arg JDK_LOCALES=en,fr,de,fi

Leave `JDK_LOCALES` unset (the default) to include every locale.

## Setting JVM arguments

Use `JAVA_OPTIONS`:
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