This layer is mainly needed for our mosaicgreifswald-images WildFly and jMeter, as only these require an installed Java. Only the slimmer JRE from Azul-Zulu is installed.
| Path | ref. ENV-Variable | Type | Purpose |
|---|---|---|---|
| /entrypoint-java-cacerts | ENTRY_JAVA_CACERTS | file | the entrypoint can be used to store its own cacerts, e.g. containing public-keys of server certificates for specific web requests or CA. |
| /entrypoint-java-trusts | ENTRY_JAVA_TRUSTS | dir | at startup, all certificate files from here are imported into the Java truststore (cacerts) and existing aliases are replaced if necessary. |
| Varaible | Available values or scheme | Default | Purpose |
|---|---|---|---|
| JAVA_VERSION | <VALID_JAVA_MAJOR_VERSION> | 25 | Here you can modify the java version with which the image is to be built. |
# build java-image
> cd mosaic-hgw/Docker/images/zulujre
> docker build --tag="mosaicgreifswald/zulujre" --file="Dockerfile.zulujre" .
# "versions" shows all installed tools and components, with their versions.
> docker run --rm mosaicgreifswald/zulujre versions
last updated : 2026-07-20 10:20:09
Architecture : x86_64
Distribution : Debian GNU/Linux 13.6 (trixie)
zulu-jre : 25.0.3
# "entrypoints" lists all registered entrypoints.
> docker run --rm mosaicgreifswald/zulujre entrypoints
ENTRY_LOGS : /entrypoint-logs
ENTRY_USAGE : /entrypoint-help-and-usage
ENTRY_JAVA_CACERTS : /entrypoint-java-cacerts
ENTRY_JAVA_TRUSTS : /entrypoint-java-trusts
# get java-version
> docker run --rm -it mosaicgreifswald/zulujre java -version
openjdk version "25.0.3" 2026-04-21 LTS
# with already customized cacerts
> docker run --rm -v /path/to/your/custom-cacerts:/entrypoint-java-cacerts mosaicgreifswald/zulujre bash -c "\
keytool -printcert -sslserver your-untrustet-server.example.com"
# or with separate public certificates
> docker run --rm -v /path/to/your/public-certificates:/entrypoint-java-trusts mosaicgreifswald/zulujre bash -c "\
./import_to_cacerts.sh && \
keytool -printcert -sslserver your-untrustet-server.example.com"
10:06:27.340 start action jdk-trusts
10:06:27.596 Importing certificate '/entrypoint-java-trusts/your-untrustet-server.example.com.pem' (alias='your-untrustet-server.example.com')
Certificate was added to keystore
10:06:28.050 Importing certificate '/entrypoint-java-trusts/other-untrustet-server.example.com.pem' (alias='other-untrustet-server.example.com')
Certificate was added to keystore
10:06:28.491 Certificate import completed.
Note: If the image starts normally, import_to_cacerts.sh will run automatically.
# build second java-image, based on the image above
> docker build --tag="mosaicgreifswald/zulujre:17-21" --file="Dockerfile.zulujre" --build-arg JAVA_VERSION=17 --build-arg TAG=mosaicgreifswald/zulujre:latest .
# show all versions (last installed java is per default selected as "current")
> docker run --rm mosaicgreifswald/zulujre:17-21 versions
last updated : 2026-01-26 14:24:54
Architecture : x86_64
Distribution : Debian GNU/Linux 13.3 (trixie)
zulu-jre : 21.0.10
zulu-jre : 17.0.18 (current)
> docker run --rm mosaicgreifswald/zulujre:17-21 java -version
openjdk version "17.0.18" 2026-01-20 LTS
# switch java-version per environment-variable
> docker run --rm -e JAVA_VERSION=21 mosaicgreifswald/zulujre:17-21 versions
last updated : 2026-01-26 14:24:54
Architecture : x86_64
Distribution : Debian GNU/Linux 13.3 (trixie)
zulu-jre : 21.0.10 (current)
zulu-jre : 17.0.18
> docker run --rm -e JAVA_VERSION=21 mosaicgreifswald/zulujre:17-21 java -version
openjdk version "21.0.10" 2026-01-20 LTS
# switch java-version in running container
> docker run --rm -it mosaicgreifswald/zulujre:17-21 bash
> java -version
openjdk version "17.0.18" 2026-01-20 LTS
> JAVA_VERSION=21 java -version
openjdk version "21.0.10" 2026-01-20 LTS
| Date | Tags | Changes |
|---|---|---|
| 2026-07-20 | 25.0.3, 25, latest | Debian 13.6 "trixie" Java 25.0.3 |
| 2026-05-20 | 25.0.3 (Dockerfile) | Debian 13.5 "trixie" Java 25.0.3 |
| 2026-05-20 | 21.0.11, 21 (Dockerfile) | Debian 13.5 "trixie" Java 21.0.11 |
| 2026-02-04 | 21.0.10 (Dockerfile) | Debian 13.3 "trixie" Java 21.0.10 fixed signal forwarding added new handling with public certificates |
| 2026-01-26 | 21.0.10 | Debian 13.3 "trixie" Java 21.0.10 |
| 2025-10-29 | 21.0.9 | Debian 13.1 "trixie" Java 21.0.9 |
| 2025-07-22 | 21.0.8 | Debian 12.11 "bookworm" Java 21.0.8 |
| 2025-04-25 | 21.0.7 (Dockerfile) | Debian 12.10 "bookworm" Java 21.0.7 |
| 2025-01-24 | 21.0.6 | Debian 12.9 "bookworm" Java 21.0.6 |
| 2025-01-13 | 21.0.5 | Debian 12.8 "bookworm" Java 21.0.5 |
| 2024-09-09 | 21.0.4 (Dockerfile) | Debian 12.7 "bookworm" Java 21.0.4 |
| 2024-03-05 | 21.0.2 | Debian 12.5 "bookworm" Java 21.0.2 |
| 2023-12-11 | 21.0.1 | Java 21.0.1 |
| 2023-12-11 | 17.0.9-1, 17 | Debian 12.4 "bookworm" |
| 2023-10-30 | 17.0.9 | Debian 12.2 "bookworm" Java 17.0.9 |
| 2023-09-28 | 17.0.8.1 | Debian 12.1 "bookworm" Java 17.0.8.1 |
| 2023-04-25 | 17.0.7 (Dockerfile) | Debian 11.6 "bullseye" Java 17.0.7 |
Content type
Image
Digest
sha256:2b9941bf3…
Size
99.6 MB
Last updated
1 day ago
docker pull mosaicgreifswald/zulujre:25.0.3