V8.0.0

[wduckitt]

Pull Request: V8.0.0 Release
Branch: V8.0.0updates → master

Breaking Changes

1. Python Package Management → UV
   Migrated all Python backend containers from pip to UV package manager
   Implemented shared UV cache across all containers at /opt/uv-cache/uv
   All backend services now use uv sync and uv run commands
   Migration: Custom Python containers must update to UV syntax in Dockerfiles

2. Base Image Update → Ubuntu 24.04 LTS
   Updated epicsbase container from previous Ubuntu to 24.04 LTS
   Python 3.12.7 now installed via UV
   EPICS Base 7.0.9
   Migration: Verify custom package compatibility with Ubuntu 24.04

3. Container Architecture Restructure
   Introduced epicsbase as foundational layer for all backend containers
   All backend services now use additional_contexts to reference epicsbase

4. Docker Version Requirement
   Minimum: Docker 28.1.1+ (required for additional_contexts support)
   Docker Compose Bake support enabled for 2-3x faster builds
   Migration: Update Docker to 28.1.1 or later
   Modified Files
   Docker Orchestration:

docker-compose.yml - Added additional_contexts and depends_on for all backend services
docker-compose-dev.yml - Added additional_contexts and depends_on for all backend services
docker-compose-dev-styleguide-dev.yml - Added additional_contexts and depends_on for all backend services

Python Package Management:

All pyproject.toml files updated for UV compatibility
Migration Impact
Standard Users: Update Docker to 28.1.1+, no code changes needed

Custom Deployment Users:

Update Docker to 28.1.1+
Add additional_contexts and depends_on to custom docker-compose backend services
Update custom Python Dockerfiles to use UV syntax
Test custom packages with Ubuntu 24.04
Benefits:

2-3x faster builds with Docker Compose Bake
Consistent Python dependencies across containers
Reduced image sizes through shared layers
Improved build caching

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