Container memory limit is not respected

Proposal

Hello!

When I'm running wiremock inside a docker container with hard memory limit, java doesn't detect it and wants to use 25% of available host memory by default. This is an issue of Temurin-17.0.19+10, and it is not present in Temurin-17.0.20+8:

$ docker run -it --rm -m 512m eclipse-temurin:17-jre java -XshowSettings:vm -version
VM settings:
    Max. Heap Size (Estimated): 123.75M
    Using VM: OpenJDK 64-Bit Server VM

openjdk version "17.0.20" 2026-07-21
OpenJDK Runtime Environment Temurin-17.0.20+8 (build 17.0.20+8)
OpenJDK 64-Bit Server VM Temurin-17.0.20+8 (build 17.0.20+8, mixed mode, sharing)

I believe simple rebuild of docker image should pull a newer Temurin java version and the problem will be solved.

Reproduction steps

Here is how I am launching a Docker container with 512MB memory limit. Java reports max heap size of 15+GB

$ docker run -it --rm --entrypoint java -m 512m wiremock/wiremock:latest -XshowSettings:vm -version
VM settings:
    Max. Heap Size (Estimated): 15.67G
    Using VM: OpenJDK 64-Bit Server VM

openjdk version "17.0.19" 2026-04-21
OpenJDK Runtime Environment Temurin-17.0.19+10 (build 17.0.19+10)
OpenJDK 64-Bit Server VM Temurin-17.0.19+10 (build 17.0.19+10, mixed mode, sharing)

References

No response

Inspect the repository's Docker image build definition and identify where the Temurin base-image version is selected. Reproduce the reported command with a 512 MB limit, update the image to a version that resolves the issue, and rerun the command to confirm Java detects the container limit.