[WIP] Remove root Dockerfile

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Remove the top-level Dockerfile located at path Dockerfile in the repository root. Actions required:

1. Create a new branch named remove-dockerfile (or similar) from the repository default branch.
2. Delete the file at Dockerfile (root) in a single commit with commit message: "Remove obsolete Dockerfile".
3. Open a pull request from that branch into the repository default branch with the title: "Remove root Dockerfile" and the PR description below.

PR description (to use in the pull request body):

Summary

• Remove the top-level Dockerfile which appears to be obsolete.

Files removed

• Dockerfile

Notes for maintainers

• I ran a quick search for references to "Dockerfile" in CI workflows and documentation; please double-check any internal tooling if this file is still required for local developer workflows. If any references remain, they should be updated to point to the new location or removed as appropriate.

Follow-ups

• If this Dockerfile is needed for local workflows, consider moving it to a tools/ or ci/ directory instead of keeping it at the repository root.

Do not modify any other files. After creating the PR, list any references you found to the Dockerfile in CI or docs (if none found, state that none were discovered). Ensure the PR contains a single commit and a clear commit message.

Repository: hydro-project/hydro
File to remove: Dockerfile
Commit message: Remove obsolete Dockerfile
Branch name: remove-dockerfile
PR title: Remove root Dockerfile

This pull request was created as a result of the following prompt from Copilot chat.

Remove the top-level Dockerfile located at path Dockerfile in the repository root. Actions required:

1. Create a new branch named remove-dockerfile (or similar) from the repository default branch.
2. Delete the file at Dockerfile (root) in a single commit with commit message: "Remove obsolete Dockerfile".
3. Open a pull request from that branch into the repository default branch with the title: "Remove root Dockerfile" and the PR description below.

PR description (to use in the pull request body):

Summary

• Remove the top-level Dockerfile which appears to be obsolete.

Files removed

• Dockerfile

Notes for maintainers

• I ran a quick search for references to "Dockerfile" in CI workflows and documentation; please double-check any internal tooling if this file is still required for local developer workflows. If any references remain, they should be updated to point to the new location or removed as appropriate.

Follow-ups

• If this Dockerfile is needed for local workflows, consider moving it to a tools/ or ci/ directory instead of keeping it at the repository root.

Do not modify any other files. After creating the PR, list any references you found to the Dockerfile in CI or docs (if none found, state that none were discovered). Ensure the PR contains a single commit and a clear commit message.

Repository: hydro-project/hydro
File to remove: Dockerfile
Commit message: Remove obsolete Dockerfile
Branch name: remove-dockerfile
PR title: Remove root Dockerfile

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