Flatten .docker Dockerfile structure and modernize Compose config

[Copilot]

Dockerfiles were unnecessarily nested under .docker/php/php8X/Dockerfile. Flattens to .docker/php8X.Dockerfile and modernizes the Docker Compose configuration.

Changes

• Renamed Dockerfiles:
  • .docker/php/php81/Dockerfile → .docker/php81.Dockerfile
  • .docker/php/php82/Dockerfile → .docker/php82.Dockerfile
  • .docker/php/php83/Dockerfile → .docker/php83.Dockerfile
  • .docker/php/php84/Dockerfile → .docker/php84.Dockerfile
• Added .docker/php85.Dockerfile for PHP 8.5
• Renamed docker-compose.yaml → compose.yml (modern Docker Compose convention)
• Dropped the obsolete version field from compose.yml
• Updated dockerfile references in compose.yml to match new Dockerfile paths
• Added php85 service to compose.yml
• Removed empty .docker/php/ directory tree

Original prompt

move .docker nested files like .docker/php81.Dockerfile

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✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[antonkomarev]

@copilot Rename docker-compose.yaml to compose.yml and drop version in it

[Copilot]

@copilot Rename docker-compose.yaml to compose.yml and drop version in it

Done in 4a76e61 — renamed docker-compose.yaml to compose.yml and removed the version field.

[antonkomarev]

@copilot add php85 container

[Copilot]

@copilot add php85 container

Done in 2006289 — added .docker/php85.Dockerfile (based on php:8.5-cli-alpine) and the php85 service to compose.yml.