Raised by [MitchellThompkins](https://github.com/MitchellThompkins) in
#1848
- Documents how to use Docker to build a local Connect plugin
- Local Plugin flow will now build workspace packages before proceeding
with plugin infra + build
- Removes recommendation to run `pnpm build:watch` from root, as this
race conditions and build cache issues.
- Makes `pnpm dev` from root parallel, preventing servers from blocking
each other.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **Documentation**
* Updated development workflow documentation to emphasize Docker-based
plugin builds
* Restructured development modes into three workflows: local Docker
builds, direct deployment, and development servers
* Updated build and deployment instructions
* **Chores**
* Modified dev script for parallel execution
* Refactored build scripts with improved dependency handling
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settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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## Summary by CodeRabbit
- **Chores**
- Refined repository settings to auto-exclude environment and
build-related files.
- Introduced a new configuration that streamlines local development and
displays key tool versions on setup.
- **Documentation**
- Expanded contribution guidelines with a dedicated developer resources
section linking to guides on development practices and repository
structure.
- Updated workflow instructions to better assist developers in setting
up their environment, especially for those using Nix.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
- also add better watcher support
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## Summary by CodeRabbit
- **New Features**
- Added a helper that displays a local installation URL to simplify
setting up the plugin.
- **Chores**
- Updated service and container port configurations to ensure consistent
network connectivity (changed from 8080 to 5858).
- Refined container management to gracefully handle running instances
during startup.
- Improved build and installation routines for streamlined deployment
and enhanced reliability.
- Enhanced documentation to clarify installation and usage instructions
for better user experience.
- Introduced a new document outlining development workflows for better
guidance.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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