Remove Docker dependencies from launcher scripts

[bbernstein]

Summary

Removed all Docker dependencies from the launcher scripts and documentation. The LacyLights backend now uses SQLite instead of PostgreSQL/Redis in Docker containers, making setup simpler and eliminating Docker Desktop as a system requirement.

Changes

Scripts Updated:

• setup.sh: Removed Docker requirement checks and start_database_containers() function
• start.sh: Removed check_docker() and start_database() functions, plus Docker cleanup code
• stop.sh: Removed Docker compose shutdown commands

Documentation Updated:

• README.md:
  • Updated backend description to mention SQLite instead of PostgreSQL/Docker
  • Simplified manual setup instructions to remove Docker commands
• README_APP.md:
  • Removed "Docker management" from features list
  • Removed Docker-related troubleshooting steps

Impact

Before: Required Node.js, npm, Git, and Docker Desktop
After: Only requires Node.js, npm, and Git

This aligns the development launcher with the Raspberry Pi deployment architecture, which already uses SQLite without Docker.

Testing

• Verified all Docker-related code has been removed from launcher scripts
• Updated documentation accurately reflects the new SQLite-based architecture
• No functionality changes to the actual LacyLights applications themselves

🤖 Generated with Claude Code

[Copilot]

Pull Request Overview

This PR removes Docker dependencies from the LacyLights launcher scripts and documentation, transitioning from PostgreSQL/Redis in Docker containers to SQLite for database storage. This simplifies the development setup by eliminating Docker Desktop as a system requirement.

Key Changes:

• Removed all Docker-related functions and checks from setup, start, and stop scripts
• Updated documentation to reflect SQLite usage instead of PostgreSQL/Docker
• Streamlined system requirements from Node.js, npm, Git, and Docker to just Node.js, npm, and Git

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
stop.sh	Removed Docker compose shutdown commands
start.sh	Removed Docker checking, database container startup, and cleanup functions
setup.sh	Removed Docker requirement validation and database container startup function
README_APP.md	Removed Docker management from features and troubleshooting sections
README.md	Updated backend description and manual setup instructions to reference SQLite instead of PostgreSQL/Docker

Comments suppressed due to low confidence (2)

setup.sh:224

• The DATABASE_URL in the default .env file still references PostgreSQL instead of SQLite. This should be updated to use SQLite format (e.g., 'file:./dev.db') to align with the PR's goal of removing PostgreSQL/Docker dependencies.

DATABASE_URL="postgresql://postgres:postgres@localhost:5432/lacylights"

setup.sh:227

• The REDIS_URL configuration is still present in the default .env file. Since this PR removes Docker dependencies including Redis containers, this configuration should either be removed or the PR description should clarify if Redis is still being used (and how it's running without Docker).

# Redis
REDIS_URL="redis://localhost:6379"

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