REQUEST: Repository maintenance on opentelemetry-ebpf

[yonch]

Affected Repository

https://github.com/open-telemetry/opentelemetry-ebpf

Requested changes

Add docker credentials and config as GitHub Secrets:

• Secret: DOCKER_USERNAME
• Secret: DOCKER_PASSWORD

And the following Variables -- these are used across the CI/CD config for readability and in the more remote cases we'd want to switch repository for testing ahead of changes to publishing (nothing currently envisioned):

• Variable: DOCKER_REGISTRY where to docker login into, https://registry-1.docker.io/ (StackOverflow)
• Variable: DOCKER_NAMESPACE the image prefix under which to publish container images, probably otel since Docker Hub doesn't appear to support multiple repository levels.

Purpose

This will enable publishing of docker images of the eBPF collectors and the eBPF reducer from CI/CD pipelines, which also excitingly include an eBPF compatibility test that runs on multiple Linux kernels via GitHub Actions VMs!

If interested in more details: PR#109, credit to @samiura for this work!

Expected Duration

Permanent

Repository Maintainers

• @open-telemetry/ebpf-maintainers

[tigrannajaryan]

@yonch I added the secrets and variables. Note that DOCKER_REGISTRY and DOCKER_NAMESPACE are added as variables and are visible in plain text.