chore: Add a simple playbook to bring down the site

[martyngigg]

Summary

This is required, for example, if a DB upgrade is necessary.

Summary by CodeRabbit

• Chores
  • Added comprehensive automated infrastructure management system for containerised application services across all deployment servers. Enables streamlined and efficient operational procedures for managing service lifecycles, including proper shutdown and resource cleanup capabilities. Supports enhanced system maintenance processes, improved operational consistency, and overall deployment reliability across the entire production infrastructure environment.

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

A new Ansible playbook file has been added at infra/ansible/site_down.yml. The playbook targets all hosts and orchestrates the shutdown of Docker containers by halting running instances and pruning stopped ones.

Changes

Cohort / File(s)	Summary
Docker Container Lifecycle Management infra/ansible/site_down.yml	New Ansible playbook that stops all running Docker containers by querying container IDs and conditionally stopping them, then prunes stopped containers with change detection based on command output.

Poem

🐰 Hop, stop, and sweep!
Containers sleep, we leap,
Docker halts with care,
Cleanup everywhere!

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding an Ansible playbook to bring down the site, which matches the PR's core objective and the file addition.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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📝 Coding Plan

• Generate coding plan for human review comments

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