We need to record the architectural decisions made on this project.
The original govuk-docker repo was written outside of GOV.UK. Major architectural decisions, as well as more minor decisions, were written as documentation in the repo, together with their associated user NEEDS. While these documents have historical value, they are not being maintained and increasingly differ from the current state of the repo. As part of adopting an ADR approach, we should clearly deprecate these historical documents to avoid confusion.
We will use Architecture Decision Records, as described by Michael Nygard in this article: http://thinkrelevance.com/blog/2011/11/15/documenting-architecture-decisions
See Michael Nygard's article, linked above. For a lightweight ADR toolset, see Nat Pryce's adr-tools at https://github.com/npryce/adr-tools.