Add a docker-compose

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This allows running the web services in a docker container for easy local development.

Container	Description
web	Apache + PHP 8.2 serving all four services
db	MySQL 8.0 with roslogin, testman, and gitinfo databases
ldap	In-memory LDAP stub (replaces real LDAP for local testing)

Starting

docker compose up --build

Services

Once running, the following URLs are available:

URL	Service
http://localhost/roslogin/	Authentication / user management
http://localhost/testman/	Build and test results
http://localhost/getbuilds/	Pre-built revision downloads
http://localhost/rosweb/	Shared interface component

[learn-more]

This PR is created with AI, all 'fix' steps are the result of extra instructions given to the AI