Documentation for GPG signing and DCO signature

[hendrikebbers]

🆕🐥 First Timers Only

This issue is reserved for people who have never contributed to Hiero or any open source project in general.
We know that creating a pull request (PR) is a major barrier for new contributors.
The goal of this issue and all other issues labeled by 'Good First Issue' is to help you make your first contribution to Hiero.

👾 Description of the issue

There are two technical constraints that every commit needs to fit to be merged in a project within Hiero:

• Each commit must be GPG signed
• The author of each commit must sign the DCO

We need documentation of those two constraints to make it more accessible for newcomers to contribute to Hiero. Here, the documentation does not need to contain complete technical documentation. It is OK to link to other documentation like the one from GitHub. It would be great to have documentation for solving all that on the command line and samples of how it can be done in IDEs like IntelliJ or VSCode.

Some good links for the topics:

• https://wiki.linuxfoundation.org/dco
• https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits
• feat: added redis in docker-compose hashgraph/hedera-json-rpc-relay#3107 (comment)

📋 Step by step guide to do a contribution

If you have never contributed to an open source project at GitHub, the following step-by-step guide will introduce you to the workflow. More information and concrete samples for shell commands for each step can be found in our CONTRIBUTING.md file.
A more detailed general documentation of the GitHub PR workflow can be found here.

• Claim this issue: Comment below that you are interested in working on the issue
• Wait for assignment: A community member with the given rights will add you as an assignee of the issue
• Fork the repository: You can do that in GitHub (by simply clicking the 'fork' button).
• Check out the forked repository
• Create a feature branch for the issue. We do not have a hard naming definition for branches but it is best practice to prefix the branch name with the issue id.
• Solve the issue in your branch.
• Commit your changes: Here, it is needed to add sign-off information to the commit to accept the "Developer Certificate of Origin" (https://developercertificate.org). More details can be found in our CONTRIBUTING.md
• Start a Pull Request (PR): We have a pattern for naming pull requests that a GitHub Action checks. We use that pattern to support the creation of automatic release notes.
• Check GitHub Actions: Several GitHub Actions will be triggered automatically for each PR. If a GitHub Action fails and you do not understand the cause of that error do not hesitate to add a comment to the PR and ask the Hiero developer community for support.
• Wait for reviews: Members of the Hiero developer community will review your PR. If a reviewer finds any missing pieces or a problem, he or she will start a discussion with you and describe the next steps for solving the problem.
• You did it 🎉: We will merge the fix in the develop branch. Thanks for being part of the Hiero community as an open-source contributor ❤️

🎉 Contribute to Hacktoberfest

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🤔 Additional Information

If you have any questions, just ask us directly in this issue by adding a comment. You can join ask any question at our GitHub discussions. A general manual about open-source contributions can be found here.

[guido-marx]

Hi, ich würde ihn gerne bearbeiten