This commit includes two main changes:
1. **Fix Dockerfile library path for amd64:**
- I updated the `exporter/Dockerfile` to correctly determine the source path for `libiperf.so.0` when building for different architectures.
- Specifically, for `TARGETARCH=amd64`, the path `/usr/lib/x86_64-linux-gnu/libiperf.so.0` is now used.
- For `TARGETARCH=arm64`, the path `/usr/lib/aarch64-linux-gnu/libiperf.so.0` is used.
- I achieved this by copying the library to a canonical temporary location in the builder stage based on `TARGETARCH`, and then copying it from this location into the final image. This resolves an issue where builds for `amd64` would fail to find the library.
2. **Add Helm chart option to disable dependencies:**
- I added a new option `dependencies.install` (default: `true`) to `charts/iperf3-monitor/values.yaml`.
- This allows you to disable the installation of managed dependencies (i.e., Prometheus Operator via `kube-prometheus-stack` or `prometheus-operator` from TrueCharts) even if `serviceMonitor.enabled` is true.
- I updated the `condition` for these dependencies in `charts/iperf3-monitor/Chart.yaml` to `dependencies.install, serviceMonitor.enabled, ...`.
- This is useful for you if you manage your Prometheus Operator installation separately.
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