Exporter in image does not respect ARCH

[jensens]

Describe the bug

The metrics exporter fails with exec /exporter/prometheus_varnish_exporter: exec format error

To Reproduce

1. Enable exporter in values.yaml.
2. Apply Helm chart on a cluster with arm64 architecture
3. See error

Expected behavior

A running metrics sidecar as I am used to on any Arch amd64 cluster

Environment:

• Kubernetes version: 1.29
• kube-httpcache version: v0.8.1

Digging deeper:

In

kube-httpcache/build/package/docker/GoReleaser.Dockerfile

Line 19 in 2846c1f

ADD --chown=varnish https://github.com/jonnenauha/prometheus_varnish_exporter/releases/download/${EXPORTER_VERSION}/prometheus_varnish_exporter-${EXPORTER_VERSION}.linux-amd64.tar.gz /tmp

and

kube-httpcache/build/package/docker/GoReleaser.Dockerfile

Line 22 in 2846c1f

tar -xzf /tmp/prometheus_varnish_exporter-${EXPORTER_VERSION}.linux-amd64.tar.gz && \

the architecture is not taken into account (while the ARG ARCH is present and used for the base image).

Unfortunately at https://github.com/jonnenauha/prometheus_varnish_exporter/releases there is not any arm64 package provided.
I am going to create comment an issue there asking kindly for arm64 support.