docs: add initial release-process.md

docs/release-process.md

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+# Ansible Release Process
+
+## Preamble
+
+This document describes the ansible community package release process.
+
+> **Note**
+>
+> Throughout this page, placeholder values in code blocks are formatted as
+> `{PLACEHOLDER}` where `PLACEHOLDER` describes the value to fill in.
+
+
+## Set up repository clones
+
+First, you need to set up ansible-build-data and antsibull repository clones.
+This only needs to be done once.
+
+1. [Fork][abd-fork] the [ansible-build-data] repository.
+2. Checkout the antsibull and ansible/ansible (ansible-core) repositories
+   and change into antsibull.
+
+   ```
+   git clone https://github.com/ansible/ansible
+   git clone https://github.com/ansible-community/antsibull
+   cd antsibull
+   ```
+3. Checkout ansible-build-data and configure your fork.
+
+   To checkout the repository run
+
+   ```
+   mkdir build
+   cd build
+   git clone https://github.com/ansible-community/ansible-build-data
+   cd ansible-build-data
+   ```
+
+   Then, configure your fork.
+   This guide uses your Github username as the fork remote name.
+
+   ```
+   git remote add {USERNAME} https://github.com/{USERNAME}/ansible-build-data
+   git fetch {USERNAME} -v
+   ```
+
+## Release
+
+1. Change into the antsibull checkout.
+   Make sure you have the `main` branch checked out
+   and run `git pull` to update to the latest commit.
+
+2. Create a clean virtual environment for the release process.
+
+   ```
+   rm -rf release-venv
+   python3 -m venv release-venv
+   . ./release-venv/bin/activate
+   pip install -U pip
+   ```
+
+   Install the `antsibull`, `ansible-core`, and `twine` python packages,
+   as well as the community.general collection.
+
+   ```
+   pip install antsibull ansible-core twine
+   ansible-galaxy collection install --force community.general
+   ```
+
+3. Run the [ansible release playbook][release-playbook]
+   with the appropriate options.
+   You can see the [argument spec][release-playbook-args]
+   for a full breakdown, but this describes the basic usage.
+
+   ```
+   export ANSIBLE_CALLBACK_RESULT_FORMAT=yaml
+   ansible-playbook playbooks/build-single-release.yaml -e antsibull_ansible_version={VERSION}
+   ```
+
+   > **Note**
+   >
+   > When building ansible versions greater than 9.0.0a1,
+   > `Validate tags file` task failures will fail the release playbook instead
+   > of warning and moving on.
+   > See [policies.md][tagging-enforcement] for how to proceed if this step fails.
+
+4. Commit the changes and push them to your fork.
+
+   You can run the following commands to do so
+
+   ```
+   cd build/ansible-build-data
+   git switch -c release-{VERSION}
+   git add {MAJOR VERSION}/
+   git commit -m "Ansible {VERSION}: Dependencies, changelog and porting guide"
+   git push -u {USERNAME} release-{VERSION}
+   ```
+
+   Then, submit a pull request against ansible-build-data upstream.
+
+5. Submit a PR to ansible/ansible to add the new porting guide to the docsite.
+   Copy the porting guide to the ansible docsite directory
+   in your ansible checkout with the following command
+
+   ```
+   cp {MAJOR VERSION}/porting_guide_{MAJOR VERSION}.rst ../ansible/docs/docsite/rst/porting_guides/
+   ```
+
+   switch to the ansible checkout,
+   commit and push the changes,
+   and then submit a PR as you normally would.
+   You can use `Add Ansible community {VERSION} porting guide` as the commit message.
+
+6. Once the ansible-build-data PR has been merged,
+   publish the build artifacts to PyPI.
+   From the antsibull repository root, run
+
+   ```
+   twine upload build/ansible-{VERSION}.tar.gz build/ansible-{VERSION}*.whl
+   ```
+
+7. Tag the release commit in the ansible-build-data repository.
+
+   ```
+   cd build/ansible-build-data
+   git switch main
+   git pull
+   git tag {VERSION} {MERGED PR COMMIT HASH} -a -m "Ansible {VERSION}: Changelog, Porting Guide and Dependent Collection Details"
+   git push --follow-tags
+   ```
+
+8. Announce the release on Matrix and the mailing list.
+   TODO: Move announcement templates into this repository.
+   Release managers can copy and paste the previous release's announcement for
+   now.
+   Make sure to change the version numbers and sha256sum in the announcement
+   text.
+
+[abd-fork]: https://github.com/ansible-community/ansible-build-data/fork
+[ansible-build-data]: https://github.com/ansible-community/ansible-build-data
+[release-playbook]: https://github.com/ansible-community/antsibull/blob/main/playbooks/build-single-release.yaml
+[release-playbook-args]: https://github.com/ansible-community/antsibull/blob/main/roles/build-release/meta/argument_specs.yml
+[tagging-enforcement]: https://github.com/gotmax23/ansible-build-data/blob/docs/docs/policies.md#enforcement