Add Dockerfile

[jmc000]

Hey folks, I submit this small PR for adding a Dockerfile to your repo in the name of the Node Guardians team!

Since we build our own docker image in our deployment stack, we thought it may be usefull to contribute and share it with you and the community :)

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• adding Dockerfile
• add make targets for building distroless root, nonroot, root-debug and nonroot-debug images
• update README.md

[johnletey]

Hey @jmc000 - thanks for your PR 🔥

As part of our next release (v1.1), we are going to look into reproducible builds.
So we will revisit this PR in the coming weeks!

[johnletey]

Hey @jmc000 - just wanted to update you that this has been postponed to v1.2

However, we have not forgotten about it 🤝

[mbreithecker]

Hey @jmc000
my apologies for the delay on this PR. The delay was primarily due to our team prioritizing other tasks over Docker support. We aim to ensure that each feature we incorporate receives the necessary attention and resources for continued support and maintenance.

This is now the case and your commit is included in #128 which will then also close your PR.

Thank you for your patience and contributions. We truly appreciate your efforts.